Argonaut vs paper nautilus

Argonaut and paper nautilus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Argonaut	Yes	No	No	No
paper nautilus	Yes	No	No	No

As nouns, Argonaut and paper nautilus are synonyms defined as:

Argonaut and paper nautilus: cephalopod mollusk of warm seas whose females have delicate papery spiral shells

Other synonyms of Argonaut include Argonauta argo, nautilus.

Argonaut (noun)	paper nautilus (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