be active vs rest

be active is not a noun while rest is a noun.

Word	Noun	Adjective	Verb	Adverb
be active	No	No	Yes	No
rest	Yes	No	Yes	No

be active (noun)	rest (noun)
	freedom from activity (work or strain or responsibility)
	a support on which things can be put
	a musical notation indicating a silence of a specified duration
	something left after other parts have been taken away
	a state of inaction
	euphemisms for death (based on an analogy between lying in a bed and in a tomb)
	a pause for relaxation

be active (verb)	rest (verb)
be in a state of action	be at rest
	stay the same; remain in a certain state
	take a short break from one's activities in order to relax
	give a rest to
	not move; be in a resting position
	sit, as on a branch
	rest on or as if on a pillow
	put something in a resting position, as for support or steadying
	be inactive, refrain from acting
	have a place in relation to something else
	be inherent or innate in