fastidious vs particular

fastidious is not a noun while particular is a noun.

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

fastidious (noun)	particular (noun)
	a fact about some part (as opposed to general)
	(logic) a proposition that asserts something about some (but not all) members of a class
	a small part that can be considered separately from the whole

fastidious (adjective)	particular (adjective)
giving careful attention to detail; hard to please; excessively concerned with cleanliness	providing specific details or circumstances
having complicated nutritional requirements; especially growing only in special artificial cultures	exacting especially about details
	first and most important
	unique or specific to a person or thing or category
	surpassing what is common or usual or expected
	separate and distinct from others of the same group or category