look into vs check out

look into and check out both are verbs.

Word	Noun	Adjective	Verb	Adverb
look into	No	No	Yes	No
check out	No	No	Yes	No

As verbs, look into and check out are synonyms defined as:

look into and check out: examine so as to determine accuracy, quality, or condition

Other synonyms of look into include check, check into, check over, check up on, go over, suss out.

look into (verb)	check out (verb)
examine so as to determine accuracy, quality, or condition	examine so as to determine accuracy, quality, or condition
investigate scientifically	announce one's departure from a hotel
	try to learn someone's opinions and intentions
	record, add up, and receive payment for items purchased
	withdraw money by writing a check
	trace
	be verified or confirmed; pass inspection