drop line vs headline

drop line and headline both are nouns.

Word	Noun	Adjective	Verb	Adverb
drop line	Yes	No	No	No
headline	Yes	No	Yes	No

As nouns, headline is a hypernym of drop line; that is, headline is a word with a broader meaning than drop line:

drop line: a headline with the top line flush left and succeeding lines indented to the right
headline: the heading or caption of a newspaper article

Other hypernyms of drop line include newspaper headline.

drop line (noun)	headline (noun)
a headline with the top line flush left and succeeding lines indented to the right	the heading or caption of a newspaper article

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