check into vs look into

check into and look into both are verbs.

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

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

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

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

check into (verb)	look into (verb)
examine so as to determine accuracy, quality, or condition	examine so as to determine accuracy, quality, or condition
	investigate scientifically