irrelevant vs extraneous

irrelevant and extraneous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
irrelevant	No	Yes	No	No
extraneous	No	Yes	No	No

irrelevant (adjective)	extraneous (adjective)
having no bearing on or connection with the subject at issue	not belonging to that in which it is contained; introduced from an outside source
	not pertinent to the matter under consideration
	coming from the outside
	not essential