chameleon vs doer

chameleon and doer both are nouns.

Word	Noun	Adjective	Verb	Adverb
chameleon	Yes	No	No	No
doer	Yes	No	No	No

As nouns, doer is a hypernym of chameleon; that is, doer is a word with a broader meaning than chameleon:

Other hypernyms of chameleon include actor, worker.

chameleon (noun)	doer (noun)
lizard of Africa and Madagascar able to change skin color and having a projectile tongue	a person who acts and gets things done
a changeable or inconstant person