rooter vs aficionado

rooter and aficionado both are nouns.

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

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

Other hyponyms of rooter include railbird.

rooter (noun)	aficionado (noun)
an enthusiastic devotee of sports	a serious devotee of some particular music genre or musical performer
	a fan of bull fighting