Argonauta argo vs nautilus

Argonauta argo and nautilus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Argonauta argo	Yes	No	No	No
nautilus	Yes	No	No	No

As nouns, Argonauta argo and nautilus are synonyms defined as:

Argonauta argo and nautilus: cephalopod mollusk of warm seas whose females have delicate papery spiral shells

Other synonyms of Argonauta argo include Argonaut, paper nautilus.

Argonauta argo (noun)	nautilus (noun)
cephalopod mollusk of warm seas whose females have delicate papery spiral shells	cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitions
	cephalopod mollusk of warm seas whose females have delicate papery spiral shells
	a submarine that is propelled by nuclear power