sparse vs thin

sparse and thin both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sparse	No	Yes	No	No
thin	No	Yes	Yes	Yes

As adjectives, sparse and thin are synonyms defined as:

sparse (adjective)	thin (adjective)
not dense	of relatively small extent from one surface to the opposite or in cross section
	relatively thin in consistency or low in density; not viscous
	lacking excess flesh
	(of sound) lacking resonance or volume
	not dense
	very narrow
	lacking spirit or sincere effort
	lacking substance or significance

sparse (verb)	thin (verb)
	take off weight
	lose thickness; become thin or thinner
	make thin or thinner
	lessen the strength or flavor of a solution or mixture

sparse (adverb)	thin (adverb)
	without viscosity