aficionado vs lover

aficionado and lover both are nouns.

Word	Noun	Adjective	Verb	Adverb
aficionado	Yes	No	No	No
lover	Yes	No	No	No

As nouns, lover is a hypernym of aficionado; that is, lover is a word with a broader meaning than aficionado:

aficionado: a serious devotee of some particular music genre or musical performer
lover: an ardent follower and admirer

Other hypernyms of aficionado include buff, devotee, fan.

aficionado (noun)	lover (noun)
a serious devotee of some particular music genre or musical performer	a person who loves someone or is loved by someone
a fan of bull fighting	an ardent follower and admirer
	a significant other to whom you are not related by marriage