hematocytopenia vs haematocytopenia

hematocytopenia and haematocytopenia both are nouns.

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

As nouns, hematocytopenia and haematocytopenia are synonyms defined as:

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

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