Argo Navis vs constellation

Argo Navis and constellation both are nouns.

Word	Noun	Adjective	Verb	Adverb
Argo Navis	Yes	No	No	No
constellation	Yes	No	No	No

Argo Navis (noun)	constellation (noun)
formerly a large constellation in the Southern Hemisphere between Canis Major and the Southern Cross; now divided into Carina and Pyxis and Puppis and Vela	an arrangement of parts or elements
	a configuration of stars as seen from the earth