diff --git a/src/calibre/devices/kobo/driver.py b/src/calibre/devices/kobo/driver.py
index c4219da5bc..5e00d0c907 100644
--- a/src/calibre/devices/kobo/driver.py
+++ b/src/calibre/devices/kobo/driver.py
@@ -105,7 +105,7 @@ class KOBO(USBMS):
                 ' e-book file itself. With this option, calibre will send a '
                 'separate cover image to the reader, useful if you '
                 'have modified the cover.'),
-        _('Upload black and white Covers'),
+        _('Upload black and white covers'),
         _('Show expired books') +
         ':::'+_('A bug in an earlier version left non kepubs book records'
                 ' in the database.  With this option calibre will show the '
diff --git a/src/calibre/devices/kobo/kobotouch_config.py b/src/calibre/devices/kobo/kobotouch_config.py
index 29745363dc..a4cecd011a 100644
--- a/src/calibre/devices/kobo/kobotouch_config.py
+++ b/src/calibre/devices/kobo/kobotouch_config.py
@@ -277,7 +277,7 @@ class CoversGroupBox(DeviceOptionsGroupBox):
         self.setToolTip(wrap_msg(_('Upload cover images from the calibre library when sending books to the device.')))
 
         self.upload_grayscale_checkbox = create_checkbox(
-                             _('Upload black and white Covers'),
+                             _('Upload black and white covers'),
                              _('Convert covers to black and white when uploading'),
                              device.get_pref('upload_grayscale')
                              )
diff --git a/src/calibre/gui2/actions/polish.py b/src/calibre/gui2/actions/polish.py
index f6ea656863..30e4912bad 100644
--- a/src/calibre/gui2/actions/polish.py
+++ b/src/calibre/gui2/actions/polish.py
@@ -65,8 +65,8 @@ class Polish(QDialog):  # {{{
                         '<p>If the e-book file does not have'
                         ' an identifiable cover, a new cover is inserted.</p>'
                         ),
-            'jacket':_('<h3>Book Jacket</h3>%s')%HELP['jacket'],
-            'remove_jacket':_('<h3>Remove Book Jacket</h3>%s')%HELP['remove_jacket'],
+            'jacket':_('<h3>Book jacket</h3>%s')%HELP['jacket'],
+            'remove_jacket':_('<h3>Remove Book jacket</h3>%s')%HELP['remove_jacket'],
             'remove_unused_css':_('<h3>Remove unused CSS rules</h3>%s')%HELP['remove_unused_css'],
             'compress_images': _('<h3>Losslessly compress images</h3>%s') % HELP['compress_images'],
         }
diff --git a/src/calibre/gui2/dialogs/catalog.py b/src/calibre/gui2/dialogs/catalog.py
index a3987e90c9..dc2f43fa2c 100644
--- a/src/calibre/gui2/dialogs/catalog.py
+++ b/src/calibre/gui2/dialogs/catalog.py
@@ -34,7 +34,7 @@ class Catalog(QDialog, Ui_Dialog):
 
         # Display the last-used title
         self.title.setText(dynamic.get('catalog_last_used_title',
-            _('My Books')))
+            _('My books')))
 
         self.fmts, self.widgets = [], []
 
diff --git a/src/calibre/gui2/dialogs/search.py b/src/calibre/gui2/dialogs/search.py
index 648d5b1611..5c38e27170 100644
--- a/src/calibre/gui2/dialogs/search.py
+++ b/src/calibre/gui2/dialogs/search.py
@@ -47,7 +47,7 @@ def create_msg_label(self):
     f.um_label = la = QLabel(_(
         "<p>You can also perform other kinds of advanced searches, for example checking"
         ' for books that have no covers, combining multiple search expression using Boolean'
-        ' operators and so on. See the <a href=\"%s\">The search interface</a> for more information.'
+        ' operators and so on. See <a href=\"%s\">The search interface</a> for more information.'
     ) % localize_user_manual_link('https://manual.calibre-ebook.com/gui.html#the-search-interface'))
     la.setMinimumSize(QSize(150, 0))
     la.setWordWrap(True)
diff --git a/src/calibre/gui2/preferences/server.py b/src/calibre/gui2/preferences/server.py
index 2f62a054c2..5400302a5e 100644
--- a/src/calibre/gui2/preferences/server.py
+++ b/src/calibre/gui2/preferences/server.py
@@ -211,7 +211,7 @@ class MainTab(QWidget):  # {{{
         fl.addRow(options['port'].shortdoc + ':', sb)
         l.addSpacing(25)
         self.opt_auth = cb = QCheckBox(
-            _('Require &username/password to access the content server')
+            _('Require &username and password to access the content server')
         )
         l.addWidget(cb)
         self.auth_desc = la = QLabel(self)
diff --git a/src/calibre/gui2/tweak_book/preferences.py b/src/calibre/gui2/tweak_book/preferences.py
index 18796eab1c..3bdd07e273 100644
--- a/src/calibre/gui2/tweak_book/preferences.py
+++ b/src/calibre/gui2/tweak_book/preferences.py
@@ -163,7 +163,7 @@ class EditorSettings(BasicSettings):
         fc = FontFamilyChooser(self)
         self('editor_font_family', widget=fc, getter=attrgetter('font_family'), setter=lambda x, val: setattr(x, 'font_family', val))
         fc.family_changed.connect(self.emit_changed)
-        l.addRow(_('Editor font &family:'), fc)
+        l.addRow(_('Editor font family:'), fc)
 
         fs = self('editor_font_size')
         fs.setMinimum(8), fs.setSuffix(' pt'), fs.setMaximum(50)
@@ -180,7 +180,7 @@ class EditorSettings(BasicSettings):
 
         tw = self('editor_tab_stop_width')
         tw.setMinimum(2), tw.setSuffix(_(' characters')), tw.setMaximum(20)
-        l.addRow(_('Width of &tabs:'), tw)
+        l.addRow(_('W&idth of tabs:'), tw)
 
         self.tb = b = QPushButton(_('Change &templates'))
         l.addRow(_('&Templates for new files:'), b)
@@ -199,7 +199,7 @@ class EditorSettings(BasicSettings):
         l.addRow(lw)
 
         lw = self('auto_close_tags')
-        lw.setText(_('Auto &close tags when typing </'))
+        lw.setText(_('Auto close t&ags when typing </'))
         lw.setToolTip('<p>' + prepare_string_for_xml(_(
             'With this option, every time you type </ the current HTML closing tag is auto-completed')))
         l.addRow(lw)
@@ -314,8 +314,8 @@ class MainWindowSettings(BasicSettings):
                        'horizontal':{'top':_('Top'), 'bottom':_('Bottom')}[v]}
             name = 'dock_%s_%s' % (v, h)
             w = self.choices_widget(name, choices, 'horizontal', 'horizontal')
-            cn = {('top', 'left'): _('The top-left corner'), ('top', 'right'):_('The top-right corner'),
-                  ('bottom', 'left'):_('The bottom-left corner'), ('bottom', 'right'):_('The bottom-right corner')}[(v, h)]
+            cn = {('top', 'left'): _('The &top-left corner'), ('top', 'right'):_('The top-&right corner'),
+                  ('bottom', 'left'):_('The &bottom-left corner'), ('bottom', 'right'):_('The bottom-ri&ght corner')}[(v, h)]
             l.addRow(cn + ':', w)
         nd = self('restore_book_state')
         nd.setText(_('Restore &state of previously edited book when opening it again'))
@@ -354,7 +354,7 @@ class PreviewSettings(BasicSettings):
             l.addRow(_('Font family for &%s:') % text, w)
 
         w = self.choices_widget('preview_standard_font_family', families, 'serif', 'serif')
-        l.addRow(_('&Style for standard text:'), w)
+        l.addRow(_('Style for standard &text:'), w)
 
         w = self('preview_base_font_size')
         w.setMinimum(8), w.setMaximum(100), w.setSuffix(' px')