look into vs check over

look into and check over both are verbs.

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

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

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

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

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