headline vs newspaper headline

headline and newspaper headline both are nouns.

Word	Noun	Adjective	Verb	Adverb
headline	Yes	No	Yes	No
newspaper headline	Yes	No	No	No

As nouns, headline and newspaper headline are synonyms defined as:

headline and newspaper headline: the heading or caption of a newspaper article

headline (noun)	newspaper headline (noun)
the heading or caption of a newspaper article	the heading or caption of a newspaper article

headline (verb)	newspaper headline (verb)
publicize widely or highly, as if with a headline
provide (a newspaper page or a story) with a headline