accouterment vs key fob

accouterment and key fob both are nouns.

Word	Noun	Adjective	Verb	Adverb
accouterment	Yes	No	No	No
key fob	Yes	No	No	No

As nouns, key fob is a hyponym of accouterment; that is, key fob is a word with a more specific, narrower meaning than accouterment:

accouterment: clothing that is worn or carried, but not part of your main clothing
key fob: A small object fastened to a key chain or key ring and designed to be comfortably grasped.

Other hyponyms of accouterment include belt, furnishing, trappings, keyfob.

accouterment (noun)	key fob (noun)
clothing that is worn or carried, but not part of your main clothing	A small object fastened to a key chain or key ring and designed to be comfortably grasped.