glance vs looking

glance and looking both are nouns.

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

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

glance: a quick look
looking: the act of directing the eyes toward something and perceiving it visually; look

Other hypernyms of glance include look, looking at.

glance (noun)	looking (noun)
a quick look	the act of searching visually
	the act of directing the eyes toward something and perceiving it visually; look

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

glance (verb)	looking (verb)
hit at an angle
throw a glance at; take a brief look at