watch vs look

watch and look both are nouns.

Word	Noun	Adjective	Verb	Adverb
watch	Yes	No	Yes	No
look	Yes	No	Yes	No

watch (noun)	look (noun)
a purposeful surveillance to guard or observe	the act of directing the eyes toward something and perceiving it visually; look
the rite of staying awake for devotional purposes (especially on the eve of a religious festival)	physical appearance
a small portable timepiece	the feelings expressed on a person's face
a person employed to keep watch for some anticipated event	the general atmosphere of a place or situation and the effect that it has on people
a period of time (4 or 2 hours) during which some of a ship's crew are on duty
the period during which someone (especially a guard) is on duty

watch (verb)	look (verb)
find out, learn, or determine with certainty, usually by making an inquiry or other effort	to physically appear a certain way to another individual or group
look attentively	look forward to the probable occurrence of
be vigilant, be on the lookout or be careful	have faith or confidence in
observe without intervening	convey by one's expression
observe or determine by looking	perceive with attention; direct one's gaze towards; look
see or watch	give a certain impression of being something or having a certain aspect
follow with the eyes or the mind	search or seek
	take charge of or deal with
	be oriented in a certain direction, often with respect to another reference point; be opposite to
	accord in appearance with