diff --git a/CHANGELOG.md b/CHANGELOG.md
index fe3dddb20f..a69320fd14 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Changed
 
 - `Driver.process_event` is now `Driver.process_message` https://github.com/Textualize/textual/pull/5217
+- `Driver.send_event` is now `Driver.send_message` https://github.com/Textualize/textual/pull/5217
 
 ## [0.85.2] - 2024-11-02
 
diff --git a/src/textual/app.py b/src/textual/app.py
index 6ffccdb657..fc9e361f08 100644
--- a/src/textual/app.py
+++ b/src/textual/app.py
@@ -1678,7 +1678,7 @@ async def _press_keys(self, keys: Iterable[str]) -> None:
                     char = key if len(key) == 1 else None
                 key_event = events.Key(key, char)
                 key_event.set_sender(app)
-                driver.send_event(key_event)
+                driver.send_message(key_event)
                 await wait_for_idle(0)
                 await app._animator.wait_until_complete()
                 await wait_for_idle(0)
@@ -4470,6 +4470,7 @@ def _on_terminal_supports_in_band_window_resize(
         self.log.debug(message)
 
     def _on_idle(self) -> None:
+        """Send app resize events on idle, so we don't do more resizing that necessary."""
         event = self._resize_event
         if event is not None:
             self._resize_event = None
diff --git a/src/textual/driver.py b/src/textual/driver.py
index f2ecc4d621..b16b982b5e 100644
--- a/src/textual/driver.py
+++ b/src/textual/driver.py
@@ -64,21 +64,21 @@ def can_suspend(self) -> bool:
         """Can this driver be suspended?"""
         return False
 
-    def send_event(self, event: events.Event) -> None:
-        """Send an event to the target app.
+    def send_message(self, message: messages.Message) -> None:
+        """Send a message to the target app.
 
         Args:
-            event: An event.
+            message: A message.
         """
         asyncio.run_coroutine_threadsafe(
-            self._app._post_message(event), loop=self._loop
+            self._app._post_message(message), loop=self._loop
         )
 
     def process_message(self, message: messages.Message) -> None:
         """Perform additional processing on a message, prior to sending.
 
         Args:
-            event: An event to send.
+            event: A message to process.
         """
         # NOTE: This runs in a thread.
         # Avoid calling methods on the app.
@@ -111,7 +111,7 @@ def process_message(self, message: messages.Message) -> None:
                 self._down_buttons.clear()
                 move_event = self._last_move_event
                 for button in buttons:
-                    self.send_event(
+                    self.send_message(
                         MouseUp(
                             x=move_event.x,
                             y=move_event.y,
@@ -128,7 +128,7 @@ def process_message(self, message: messages.Message) -> None:
                     )
             self._last_move_event = message
 
-        self.send_event(message)
+        self.send_message(message)
 
     @abstractmethod
     def write(self, data: str) -> None: