lover vs fanboy

lover and fanboy both are nouns.

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

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

lover: an ardent follower and admirer
fanboy: A male fan who is obsessive about a particular subject (especially, someone or something in popular entertainment media

lover (noun)	fanboy (noun)
a person who loves someone or is loved by someone	A male fan who is obsessive about a particular subject (especially, someone or something in popular entertainment media
an ardent follower and admirer
a significant other to whom you are not related by marriage