keen vs dandy

keen and dandy both are nouns.

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

As adjectives, keen and dandy are synonyms defined as:

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

keen (noun)	dandy (noun)
a funeral lament sung with loud wailing	a sailing vessel with two masts; a small mizzen is aft of the rudderpost
	a man who is much concerned with his dress and appearance

keen (adjective)	dandy (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

keen (verb)	dandy (verb)
express grief verbally