haematocytopenia vs hematocytopenia

haematocytopenia and hematocytopenia both are nouns.

Word	Noun	Adjective	Verb	Adverb
haematocytopenia	Yes	No	No	No
hematocytopenia	Yes	No	No	No

As nouns, haematocytopenia and hematocytopenia are synonyms defined as:

haematocytopenia and hematocytopenia: an abnormally low number of red blood cells in the blood

haematocytopenia (noun)	hematocytopenia (noun)
an abnormally low number of red blood cells in the blood	an abnormally low number of red blood cells in the blood