peptization vs chemical change

peptization and chemical change both are nouns.

Word	Noun	Adjective	Verb	Adverb
peptization	Yes	No	No	No
chemical change	Yes	No	No	No

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

peptization: the process of converting to a sol; bringing to a colloidal solution
chemical change: (chemistry) any process determined by the atomic and molecular composition and structure of the substances involved

Other hypernyms of peptization include chemical action, chemical process.

peptization (noun)	chemical change (noun)
the process of converting to a sol; bringing to a colloidal solution	(chemistry) any process determined by the atomic and molecular composition and structure of the substances involved