contestant vs NIMBY

contestant and NIMBY both are nouns.

Word	Noun	Adjective	Verb	Adverb
contestant	Yes	No	No	No
NIMBY	Yes	No	No	No

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

contestant: a person who dissents from some established policy
NIMBY: someone who objects to siting something in their own neighborhood but does not object to it being sited elsewhere; an acronym for not in my backyard

Other hyponyms of contestant include CO, conscientious objector, nonconformist, recusant, political dissident.

contestant (noun)	NIMBY (noun)
a person who participates in competitions	someone who objects to siting something in their own neighborhood but does not object to it being sited elsewhere; an acronym for not in my backyard
a person who dissents from some established policy