hypovolaemia vs hypovolemia

hypovolaemia and hypovolemia both are nouns.

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

As nouns, hypovolaemia and hypovolemia are synonyms defined as:

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

hypovolaemia (noun)	hypovolemia (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