hit the hay vs turn in

hit the hay and turn in both are verbs.

Word	Noun	Adjective	Verb	Adverb
hit the hay	No	No	Yes	No
turn in	No	No	Yes	No

As verbs, hit the hay and turn in are synonyms defined as:

Other synonyms of hit the hay include bed, crawl in, go to bed, go to sleep, hit the sack, kip down, retire, sack out.

hit the hay (verb)	turn in (verb)
prepare for sleep	prepare for sleep
	carry out (performances)
	make an entrance by turning from a road
	to surrender someone or something to another