sleep late vs sleep in

sleep late and sleep in both are verbs.

Word	Noun	Adjective	Verb	Adverb
sleep late	No	No	Yes	No
sleep in	No	No	Yes	No

As verbs, sleep late and sleep in are synonyms defined as:

sleep late (verb)	sleep in (verb)
sleep later than usual or customary	sleep later than usual or customary
	live in the house where one works