scan vs scrutiny

scan and scrutiny both are nouns.

Word	Noun	Adjective	Verb	Adverb
scan	Yes	No	Yes	No
scrutiny	Yes	No	No	No

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

Other hypernyms of scan include examination.

scan (noun)	scrutiny (noun)
the act of scanning; systematic examination of a prescribed region	the act of examining something closely (as for mistakes)
an image produced by scanning	a prolonged intense look

scan (verb)	scrutiny (verb)
obtain data from magnetic tapes or other digital sources
read metrically
make a wide, sweeping search of
move a light beam over; in electronics, to reproduce an image
examine hastily
examine minutely or intensely
conform to a metrical pattern