archaism vs off

archaism is a noun but off is not a noun.

Word	Noun	Adjective	Verb	Adverb
archaism	Yes	No	No	No
off	No	Yes	Yes	Yes

archaism (noun)	off (noun)
the use of an archaic expression

archaism (adjective)	off (adjective)
	not in operation or operational
	(of events) no longer planned or scheduled
	not performing or scheduled for duties
	in an unpalatable state
	below a satisfactory level

archaism (verb)	off (verb)
	kill intentionally and with premeditation

archaism (adverb)	off (adverb)
	at a distance in space or time
	from a particular thing or place or position (`forth' is obsolete)
	no longer on or in contact or attached