Try to consistently use "inherit" vs "derive" in documentation.

discord/errors.py

@@ -130,7 +130,7 @@ class InvalidArgument(ClientException):
     is invalid some way (e.g. wrong value or wrong type).
 
     This could be considered the analogous of ``ValueError`` and
-    ``TypeError`` except derived from :exc:`ClientException` and thus
+    ``TypeError`` except inherited from :exc:`ClientException` and thus
     :exc:`DiscordException`.
     """
     pass

discord/ext/commands/bot.py

@@ -182,7 +182,7 @@ class BotBase(GroupMixin):
             This function can either be a regular function or a coroutine.
 
         Similar to a command :func:`.check`\, this takes a single parameter
-        of type :class:`.Context` and can only raise exceptions derived from
+        of type :class:`.Context` and can only raise exceptions inherited from
         :exc:`.CommandError`.
 
         Example
@@ -255,7 +255,7 @@ class BotBase(GroupMixin):
             This function can either be a regular function or a coroutine.
 
         Similar to a command :func:`.check`\, this takes a single parameter
-        of type :class:`.Context` and can only raise exceptions derived from
+        of type :class:`.Context` and can only raise exceptions inherited from
         :exc:`.CommandError`.
 
         Example
@@ -963,7 +963,7 @@ class Bot(BotBase, discord.Client):
     pass
 
 class AutoShardedBot(BotBase, discord.AutoShardedClient):
-    """This is similar to :class:`.Bot` except that it is derived from
+    """This is similar to :class:`.Bot` except that it is inherited from
     :class:`discord.AutoShardedClient` instead.
     """
     pass

discord/ext/commands/core.py

@@ -135,7 +135,7 @@ class Command(_BaseCommand):
     checks
         A list of predicates that verifies if the command could be executed
         with the given :class:`.Context` as the sole parameter. If an exception
-        is necessary to be thrown to signal failure, then one derived from
+        is necessary to be thrown to signal failure, then one inherited from
         :exc:`.CommandError` should be used. Note that if the checks fail then
         :exc:`.CheckFailure` exception is raised to the :func:`.on_command_error`
         event.
@@ -1336,7 +1336,7 @@ def has_permissions(**perms):
     :class:`.discord.Permissions`.
 
     This check raises a special exception, :exc:`.MissingPermissions`
-    that is derived from :exc:`.CheckFailure`.
+    that is inherited from :exc:`.CheckFailure`.
 
     Parameters
     ------------
@@ -1402,7 +1402,7 @@ def bot_has_permissions(**perms):
     the permissions listed.
 
     This check raises a special exception, :exc:`.BotMissingPermissions`
-    that is derived from :exc:`.CheckFailure`.
+    that is inherited from :exc:`.CheckFailure`.
     """
     def predicate(ctx):
         guild = ctx.guild
@@ -1424,7 +1424,7 @@ def guild_only():
     using the command.
 
     This check raises a special exception, :exc:`.NoPrivateMessage`
-    that is derived from :exc:`.CheckFailure`.
+    that is inherited from :exc:`.CheckFailure`.
     """
 
     def predicate(ctx):

discord/ext/commands/errors.py

@@ -43,7 +43,7 @@ class CommandError(DiscordException):
 
     This inherits from :exc:`discord.DiscordException`.
 
-    This exception and exceptions derived from it are handled
+    This exception and exceptions inherited from it are handled
     in a special way as they are caught and passed into a special event
     from :class:`.Bot`\, :func:`on_command_error`.
     """
@@ -237,7 +237,7 @@ class BadUnionArgument(UserInputError):
 class ArgumentParsingError(UserInputError):
     """An exception raised when the parser fails to parse a user's input.
 
-    This derives from :exc:`UserInputError`. There are child classes
+    This inherits from :exc:`UserInputError`. There are child classes
     that implement more granular parsing errors for i18n purposes.
     """
     pass
@@ -245,7 +245,7 @@ class ArgumentParsingError(UserInputError):
 class UnexpectedQuoteError(ArgumentParsingError):
     """An exception raised when the parser encounters a quote mark inside a non-quoted string.
 
-    This derives from :exc:`ArgumentParsingError`.
+    This inherits from :exc:`ArgumentParsingError`.
 
     Attributes
     ------------
@@ -260,7 +260,7 @@ class InvalidEndOfQuotedStringError(ArgumentParsingError):
     """An exception raised when a space is expected after the closing quote in a string
     but a different character is found.
 
-    This derives from :exc:`ArgumentParsingError`.
+    This inherits from :exc:`ArgumentParsingError`.
 
     Attributes
     -----------
@@ -274,7 +274,7 @@ class InvalidEndOfQuotedStringError(ArgumentParsingError):
 class ExpectedClosingQuoteError(ArgumentParsingError):
     """An exception raised when a quote character is expected but not found.
 
-    This derives from :exc:`ArgumentParsingError`.
+    This inherits from :exc:`ArgumentParsingError`.
 
     Attributes
     -----------

discord/ext/commands/help.py

@@ -770,7 +770,7 @@ class HelpCommand:
 class DefaultHelpCommand(HelpCommand):
     """The implementation of the default help command.
 
-    This derives from :class:`HelpCommand`.
+    This inherits from :class:`HelpCommand`.
 
     It extends it with the following attributes.
 
@@ -973,7 +973,7 @@ class DefaultHelpCommand(HelpCommand):
 class MinimalHelpCommand(HelpCommand):
     """An implementation of a help command with minimal output.
 
-    This derives from :class:`HelpCommand`.
+    This inherits from :class:`HelpCommand`.
 
     Attributes
     ------------