proffer vs feeler

proffer and feeler both are nouns.

Word	Noun	Adjective	Verb	Adverb
proffer	Yes	No	Yes	No
feeler	Yes	No	No	No

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

Other hyponyms of proffer include breath, hint, intimation, ghost, touch, trace, advance, approach, overture.

proffer (noun)	feeler (noun)
a proposal offered for acceptance or rejection	one of a pair of mobile appendages on the head of e.g. insects and crustaceans; typically sensitive to touch and taste
	slender tactile process on the jaws of a fish
	sensitivity similar to that of a receptor organ
	a tentative suggestion designed to elicit the reactions of others

proffer (verb)	feeler (verb)
present for acceptance or rejection