neat vs not bad

neat and not bad both are adjectives.

Word	Noun	Adjective	Verb	Adverb
neat	No	Yes	No	No
not bad	No	Yes	No	No

As adjectives, neat and not bad are synonyms defined as:

Other synonyms of neat include bang-up, bully, corking, cracking, dandy, great, groovy, keen, nifty, old, peachy, slap-up, smashing, swell.

neat (adjective)	not bad (adjective)
free from clumsiness; precisely or deftly executed	excellent
excellent
superficially impressive, but lacking depth and attention to the true complexities of a subject
clean or organized
(of an alcoholic drink) without water
showing care in execution