light brown vs fawn

light brown and fawn both are nouns.

Word	Noun	Adjective	Verb	Adverb
light brown	Yes	No	No	No
fawn	Yes	No	Yes	No

As nouns, fawn is a hyponym of light brown; that is, fawn is a word with a more specific, narrower meaning than light brown:

Other hyponyms of light brown include tan, topaz, dun, grayish brown, greyish brown, beige, ecru.

light brown (noun)	fawn (noun)
a brown that is light but unsaturated	a young deer
	a color or pigment varying around a light grey-brown color

light brown (verb)	fawn (verb)
	have fawns
	try to gain favor by cringing or flattering
	show submission or fear