rest vs rest on

rest is a noun but rest on is not a noun.

Word	Noun	Adjective	Verb	Adverb
rest	Yes	No	Yes	No
rest on	No	No	Yes	No

rest (noun)	rest on (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

rest (verb)	rest on (verb)
be at rest	rest on for support
stay the same; remain in a certain state	use as a basis for theories and claims
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