phase change vs phase transition

phase change and phase transition both are nouns.

Word	Noun	Adjective	Verb	Adverb
phase change	Yes	No	No	No
phase transition	Yes	No	No	No

As nouns, phase change and phase transition are synonyms defined as:

phase change and phase transition: a change from one state (solid or liquid or gas) to another without a change in chemical composition

Other synonyms of phase change include physical change, state change.

phase change (noun)	phase transition (noun)
a change from one state (solid or liquid or gas) to another without a change in chemical composition	a change from one state (solid or liquid or gas) to another without a change in chemical composition