Kate is a text editor, TextEdit and Pages are word processors. I'd also love Kate (or Notepad++) on macos, they're just kinda a non sequitur.
TextEdit is a text editor, which has had an optional WYSIWYG word processing mode added to it --- hit cmd shift t to go into text edit mode.
TextEdit is a text editor, which has had an optional WYSIWYG word processing mode added to it --- hit cmd shift t to go into text edit mode.