immune suppressant drug vs immunosuppressor

immune suppressant drug and immunosuppressor both are nouns.

Word	Noun	Adjective	Verb	Adverb
immune suppressant drug	Yes	No	No	No
immunosuppressor	Yes	No	No	No

As nouns, immune suppressant drug and immunosuppressor are synonyms defined as:

immune suppressant drug and immunosuppressor: a drug that lowers the body's normal immune response

Other synonyms of immune suppressant drug include immunosuppressant, immunosuppressive, immunosuppressive drug.

immune suppressant drug (noun)	immunosuppressor (noun)
a drug that lowers the body's normal immune response	a drug that lowers the body's normal immune response