hemoprotein vs haemoprotein

hemoprotein and haemoprotein both are nouns.

Word	Noun	Adjective	Verb	Adverb
hemoprotein	Yes	No	No	No
haemoprotein	Yes	No	No	No

As nouns, hemoprotein and haemoprotein are synonyms defined as:

hemoprotein and haemoprotein: a conjugated protein linked to a compound of iron and porphyrin

hemoprotein (noun)	haemoprotein (noun)
a conjugated protein linked to a compound of iron and porphyrin	a conjugated protein linked to a compound of iron and porphyrin