cracking vs dandy

cracking and dandy both are nouns.

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

As adjectives, cracking and dandy are synonyms defined as:

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

cracking (noun)	dandy (noun)
the act of cracking something	a sailing vessel with two masts; a small mizzen is aft of the rudderpost
a sudden sharp noise	a man who is much concerned with his dress and appearance
the process whereby heavy molecules of naphtha or petroleum are broken down into hydrocarbons of lower molecular weight (especially in the oil-refining process)

cracking (adjective)	dandy (adjective)
excellent	excellent