look into vs experiment

look into is not a noun while experiment is a noun.

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

As verbs, experiment is a hyponym of look into; that is, experiment is a word with a more specific, narrower meaning than look into:

Other hyponyms of look into include explore, research, search, explore, examine, probe, research.

look into (noun)	experiment (noun)
	the act of conducting a controlled test or investigation
	a venture at something new or different
	the testing of an idea

look into (verb)	experiment (verb)
examine so as to determine accuracy, quality, or condition	to conduct a test or investigation
investigate scientifically	try something new, as in order to gain experience