aplacophoran vs solenogaster

aplacophoran and solenogaster both are nouns.

Word	Noun	Adjective	Verb	Adverb
aplacophoran	Yes	No	No	No
solenogaster	Yes	No	No	No

As nouns, aplacophoran and solenogaster are synonyms defined as:

aplacophoran and solenogaster: deep-water wormlike mollusks lacking calcareous plates on the body but having fine slimy spicules on the covering mantle

aplacophoran (noun)	solenogaster (noun)
deep-water wormlike mollusks lacking calcareous plates on the body but having fine slimy spicules on the covering mantle	deep-water wormlike mollusks lacking calcareous plates on the body but having fine slimy spicules on the covering mantle