noun
title of a work
Refers to the name of a creative or academic work such as a book, movie, painting, or paper.
この作品名は何ですか。
What is the title of this work?
作品名を忘れてしまった。
I forgot the title of the work.
題名 is a more general word for 'title' of any kind, while 作品名 specifically refers to the title of a creative or academic work.
Compound of 作品 (sakuhin, 'work') and 名 (mei, 'name').