fella vs chap

fella and chap both are nouns.

Word	Noun	Adjective	Verb	Adverb
fella	Yes	No	No	No
chap	Yes	No	Yes	No

As nouns, fella and chap are synonyms defined as:

Other synonyms of fella include blighter, bloke, cuss, feller, fellow, gent, lad.

fella (noun)	chap (noun)
a boy or man	(usually in the plural) leather leggings without a seat; joined by a belt; often have flared outer flaps; worn over trousers by cowboys to protect their legs
	a crack in a lip caused usually by cold
	a boy or man
	a long narrow depression in a surface

fella (verb)	chap (verb)
	crack due to dehydration