adjuvant vs auxiliary

adjuvant and auxiliary both are nouns.

Word	Noun	Adjective	Verb	Adverb
adjuvant	Yes	Yes	No	No
auxiliary	Yes	Yes	No	No

As adjectives, adjuvant and auxiliary are synonyms defined as:

Other synonyms of adjuvant include accessory, adjunct, ancillary, appurtenant.

adjuvant (noun)	auxiliary (noun)
an additive that enhances the effectiveness of medical treatment	someone who acts as assistant

adjuvant (adjective)	auxiliary (adjective)
enhancing the action of a medical treatment	functioning in a supporting capacity
furnishing added support	furnishing added support