immunosuppressor vs immunosuppressive

immunosuppressor and immunosuppressive both are nouns.

Word	Noun	Adjective	Verb	Adverb
immunosuppressor	Yes	No	No	No
immunosuppressive	Yes	Yes	No	No

As nouns, immunosuppressor and immunosuppressive are synonyms defined as:

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

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

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

immunosuppressor (adjective)	immunosuppressive (adjective)
	of or relating to a substance that lowers the body's normal immune response and induces immunosuppression