bully vs keen

bully and keen both are nouns.

Word	Noun	Adjective	Verb	Adverb
bully	Yes	Yes	Yes	No
keen	Yes	Yes	Yes	No

As adjectives, bully and keen are synonyms defined as:

Other synonyms of bully include bang-up, corking, cracking, dandy, great, groovy, neat, nifty, not bad, old, peachy, slap-up, smashing, swell.

bully (noun)	keen (noun)
a cruel and brutal fellow	a funeral lament sung with loud wailing
a hired thug

bully (adjective)	keen (adjective)
excellent	excellent
	intense or sharp
	having or demonstrating ability to recognize or draw fine distinctions
	having a sharp cutting edge or point
	painful as if caused by a sharp instrument

bully (verb)	keen (verb)
discourage or frighten with threats or a domineering manner; intimidate	express grief verbally
be bossy towards