aortic aneurysm vs aneurysm

aortic aneurysm and aneurysm both are nouns.

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

As nouns, aneurysm is a hypernym of aortic aneurysm; that is, aneurysm is a word with a broader meaning than aortic aneurysm:

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

Other hypernyms of aortic aneurysm include aneurism.

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