watching vs looking

watching and looking both are nouns.

Word	Noun	Adjective	Verb	Adverb
watching	Yes	No	No	No
looking	Yes	Yes	No	No

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

watching: the act of observing; taking a patient look
looking: the act of directing the eyes toward something and perceiving it visually; look

Other hypernyms of watching include look, looking at.

watching (noun)	looking (noun)
the act of observing; taking a patient look	the act of searching visually
	the act of directing the eyes toward something and perceiving it visually; look

watching (adjective)	looking (adjective)
	appearing to be as specified; usually used as combining forms