bluing vs chemical action

bluing and chemical action both are nouns.

Word	Noun	Adjective	Verb	Adverb
bluing	Yes	No	No	No
chemical action	Yes	No	No	No

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

bluing: a process that makes something blue (or bluish)
chemical action: (chemistry) any process determined by the atomic and molecular composition and structure of the substances involved

Other hypernyms of bluing include chemical change, chemical process.

bluing (noun)	chemical action (noun)
a process that makes something blue (or bluish)	(chemistry) any process determined by the atomic and molecular composition and structure of the substances involved
used to whiten laundry or hair or give it a bluish tinge