immunodeficiency vs immunodeficient

immunodeficiency is a noun but immunodeficient is not a noun.

Word	Noun	Adjective	Verb	Adverb
immunodeficiency	Yes	No	No	No
immunodeficient	No	Yes	No	No

immunodeficiency (noun)	immunodeficient (noun)
immunological disorder in which some part of the body's immune system is inadequate and resistance to infectious diseases is reduced

immunodeficiency (adjective)	immunodeficient (adjective)
	incapable of developing an immune response following exposure to an antigen