pearly nautilus vs nautilus

pearly nautilus and nautilus both are nouns.

Word	Noun	Adjective	Verb	Adverb
pearly nautilus	Yes	No	No	No
nautilus	Yes	No	No	No

As nouns, pearly nautilus and nautilus are synonyms defined as:

pearly nautilus and nautilus: cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitions

Other synonyms of pearly nautilus include chambered nautilus.

pearly nautilus (noun)	nautilus (noun)
cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitions	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