impertinent vs immaterial

impertinent and immaterial both are adjectives.

Word	Noun	Adjective	Verb	Adverb
impertinent	No	Yes	No	No
immaterial	No	Yes	No	No

As adjectives, impertinent and immaterial are synonyms defined as:

impertinent and immaterial: not pertinent to the matter under consideration

Other synonyms of impertinent include extraneous, orthogonal.

impertinent (adjective)	immaterial (adjective)
improperly forward or bold	not consisting of matter
not pertinent to the matter under consideration	of no importance or relevance especially to a law case
characterized by a lightly pert and exuberant quality	without material form or substance
	not pertinent to the matter under consideration
	(often followed by `to') lacking importance; not mattering one way or the other