unidentifiable vs elusive

unidentifiable and elusive both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unidentifiable	No	Yes	No	No
elusive	No	Yes	No	No

unidentifiable (adjective)	elusive (adjective)
impossible to identify	skillful at eluding capture
	making great mental demands; hard to comprehend or solve or believe
	difficult to detect or grasp by the mind or analyze
	difficult to describe