melting vs physical change

melting and physical change both are nouns.

Word	Noun	Adjective	Verb	Adverb
melting	Yes	Yes	No	No
physical change	Yes	No	No	No

As nouns, physical change is a hypernym of melting; that is, physical change is a word with a broader meaning than melting:

melting: the process whereby heat changes something from a solid to a liquid
physical change: a change from one state (solid or liquid or gas) to another without a change in chemical composition

Other hypernyms of melting include heating, warming, phase change, phase transition, state change.

melting (noun)	physical change (noun)
the process whereby heat changes something from a solid to a liquid	a change from one state (solid or liquid or gas) to another without a change in chemical composition

melting (adjective)	physical change (adjective)
becoming liquid