picky vs fastidious

picky and fastidious both are adjectives.

Word	Noun	Adjective	Verb	Adverb
picky	No	Yes	No	No
fastidious	No	Yes	No	No

picky (adjective)	fastidious (adjective)
exacting especially about details	giving careful attention to detail; hard to please; excessively concerned with cleanliness
	having complicated nutritional requirements; especially growing only in special artificial cultures