whitener vs blanching agent

whitener and blanching agent both are nouns.

Word	Noun	Adjective	Verb	Adverb
whitener	Yes	No	No	No
blanching agent	Yes	No	No	No

As nouns, whitener and blanching agent are synonyms defined as:

whitener and blanching agent: an agent that makes things white or colorless

Other synonyms of whitener include bleach, bleaching agent.

whitener (noun)	blanching agent (noun)
an agent that makes things white or colorless	an agent that makes things white or colorless