scrutiny vs looking at

scrutiny and looking at both are nouns.

Word	Noun	Adjective	Verb	Adverb
scrutiny	Yes	No	No	No
looking at	Yes	No	No	No

As nouns, looking at is a hypernym of scrutiny; that is, looking at is a word with a broader meaning than scrutiny:

scrutiny: a prolonged intense look
looking at: the act of directing the eyes toward something and perceiving it visually; look

Other hypernyms of scrutiny include look, looking.

scrutiny (noun)	looking at (noun)
the act of examining something closely (as for mistakes)	the act of directing the eyes toward something and perceiving it visually; look
a prolonged intense look