particular vs fastidious

particular is a noun but fastidious is not a noun.

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

particular (noun)	fastidious (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

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