bullfighter vs torero

bullfighter and torero both are nouns.

Word	Noun	Adjective	Verb	Adverb
bullfighter	Yes	No	No	No
torero	Yes	No	No	No

As nouns, torero is a hyponym of bullfighter; that is, torero is a word with a more specific, narrower meaning than bullfighter:

Other hyponyms of bullfighter include banderillero, matador, novillero, picador.

bullfighter (noun)	torero (noun)
someone who fights bulls	a matador or one of the supporting team during a bull fight