melt off vs thin

melt off is not an adjective while thin is an adjective.

Word	Noun	Adjective	Verb	Adverb
melt off	No	No	Yes	No
thin	No	Yes	Yes	Yes

As verbs, melt off and thin are synonyms defined as:

Other synonyms of melt off include reduce, slenderize, slim, slim down.

melt off (adjective)	thin (adjective)
	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

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

melt off (adverb)	thin (adverb)
	without viscosity