Refers to a secondary title of a book, film, article, or other work; also used for captions or subtitles in audiovisual media.
この映画のサブタイトルは「希望の光」です。
The subtitle of this movie is 'Light of Hope'.
外国のドラマを見るときは、サブタイトルを表示します。
When I watch foreign dramas, I turn on subtitles.
This movie has the subtitle 'The Final Battle.'
Each installment of the new series has a different subtitle.