vapour vs physical change

vapour and physical change both are nouns.

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

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

vapour: the process of becoming a vapor
physical change: a change from one state (solid or liquid or gas) to another without a change in chemical composition

Other hypernyms of vapour include phase change, phase transition, state change.

vapour (noun)	physical change (noun)
the process of becoming a vapor	a change from one state (solid or liquid or gas) to another without a change in chemical composition
a visible suspension in the air of particles of some substance