thrombocytopenia vs thrombopenia

thrombocytopenia and thrombopenia both are nouns.

Word	Noun	Adjective	Verb	Adverb
thrombocytopenia	Yes	No	No	No
thrombopenia	Yes	No	No	No

As nouns, thrombocytopenia and thrombopenia are synonyms defined as:

thrombocytopenia and thrombopenia: a blood disease characterized by an abnormally small number of platelets in the blood

thrombocytopenia (noun)	thrombopenia (noun)
a blood disease characterized by an abnormally small number of platelets in the blood	a blood disease characterized by an abnormally small number of platelets in the blood