keep vs rest

keep and rest both are nouns.

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

As verbs, rest is a hypernym of keep; that is, rest is a word with a broader meaning than keep:

Other hypernyms of keep include remain, stay.

keep (noun)	rest (noun)
the main tower within the walls of a medieval castle or fortress	freedom from activity (work or strain or responsibility)
a cell in a jail or prison	a support on which things can be put
the financial means whereby one lives	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

keep (verb)	rest (verb)
prevent (food) from rotting	be at rest
prevent the action or expression of	stay the same; remain in a certain state
stick to correctly or closely	take a short break from one's activities in order to relax
maintain by writing regular records	give a rest to
supply with necessities and support	not move; be in a resting position
hold and prevent from leaving	sit, as on a branch
retain possession of	rest on or as if on a pillow
look after; be the keeper of; have charge of	put something in a resting position, as for support or steadying
retain rights to	be inactive, refrain from acting
maintain for use and service	have a place in relation to something else
have as a supply	be inherent or innate in
store or keep customarily
stop (someone or something) from doing something or being in a certain state
allow to remain in a place or position or maintain a property or feature
conform one's action or practice to
behave as expected during of holidays or rites
cause to continue in a certain state, position, or activity
supply with room and board
maintain in safety from injury, harm, or danger
fail to spoil or rot
continue a certain state, condition, or activity
to rear