immune suppressant drug vs immunosuppressive drug

immune suppressant drug and immunosuppressive drug both are nouns.

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

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

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

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

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