kip vs slumber

kip and slumber both are nouns.

Word	Noun	Adjective	Verb	Adverb
kip	Yes	No	Yes	No
slumber	Yes	No	Yes	No

As verbs, kip and slumber are synonyms defined as:

Other synonyms of kip include catch some Z's, log Z's, sleep.

kip (noun)	slumber (noun)
a gymnastic exercise performed starting from a position with the legs over the upper body and moving to an erect position by arching the back and swinging the legs out and down while forcing the chest upright	a dormant or quiescent state
the basic unit of money in Laos	a natural and periodic state of rest during which consciousness of the world is suspended
sleep

kip (verb)	slumber (verb)
be asleep	be asleep