ischemia vs ischaemia

ischemia and ischaemia both are nouns.

Word	Noun	Adjective	Verb	Adverb
ischemia	Yes	No	No	No
ischaemia	Yes	No	No	No

As nouns, ischemia and ischaemia are synonyms defined as:

ischemia and ischaemia: local anemia in a given body part sometimes resulting from vasoconstriction or thrombosis or embolism

ischemia (noun)	ischaemia (noun)
local anemia in a given body part sometimes resulting from vasoconstriction or thrombosis or embolism	local anemia in a given body part sometimes resulting from vasoconstriction or thrombosis or embolism