Argonaut vs Argonauta argo

Argonaut and Argonauta argo both are nouns.

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

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

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

Other synonyms of Argonaut include nautilus, paper nautilus.

Argonaut (noun)	Argonauta argo (noun)
cephalopod mollusk of warm seas whose females have delicate papery spiral shells	cephalopod mollusk of warm seas whose females have delicate papery spiral shells
(Greek mythology) one of the heroes who sailed with Jason in search of the Golden Fleece