aneurism vs aneurysm

aneurism and aneurysm both are nouns.

Word	Noun	Adjective	Verb	Adverb
aneurism	Yes	No	No	No
aneurysm	Yes	No	No	No

As nouns, aneurism and aneurysm are synonyms defined as:

aneurism and aneurysm: a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall

aneurism (noun)	aneurysm (noun)
a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall	a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall