TV station vs broadcast station

TV station and broadcast station both are nouns.

Word	Noun	Adjective	Verb	Adverb
TV station	Yes	No	No	No
broadcast station	Yes	No	No	No

As nouns, broadcast station is a hypernym of TV station; that is, broadcast station is a word with a broader meaning than TV station:

TV station: station for the production and transmission of television broadcasts
broadcast station: a station equipped to broadcast radio or television programs

Other hypernyms of TV station include broadcasting station.

TV station (noun)	broadcast station (noun)
station for the production and transmission of television broadcasts	a station equipped to broadcast radio or television programs