When a movie is shown to an audience whose language is not the language of the movie, it sometimes includes subtitles in the audience's language, which appear beneath the action of the movie. If a teacher is too sick to go to work, they might ask for a substitute teacher, who replaces them in the classroom for the day. Do the words subtitle and substitute begin with the same morpheme? Yes, they begin with the same morpheme. No, they don't begin with the same morpheme