lymphopenia vs lymphocytopenia

lymphopenia and lymphocytopenia both are nouns.

Word	Noun	Adjective	Verb	Adverb
lymphopenia	Yes	No	No	No
lymphocytopenia	Yes	No	No	No

As nouns, lymphopenia and lymphocytopenia are synonyms defined as:

lymphopenia and lymphocytopenia: an abnormally small number of lymphocytes in the circulating blood

lymphopenia (noun)	lymphocytopenia (noun)
an abnormally small number of lymphocytes in the circulating blood	an abnormally small number of lymphocytes in the circulating blood