hypovolemia vs hypovolaemia

hypovolemia and hypovolaemia both are nouns.

Word	Noun	Adjective	Verb	Adverb
hypovolemia	Yes	No	No	No
hypovolaemia	Yes	No	No	No

As nouns, hypovolemia and hypovolaemia are synonyms defined as:

hypovolemia and hypovolaemia: a blood disorder consisting of a decrease in the volume of circulating blood

hypovolemia (noun)	hypovolaemia (noun)
a blood disorder consisting of a decrease in the volume of circulating blood	a blood disorder consisting of a decrease in the volume of circulating blood