Gasteropoda vs Gastropoda

Gasteropoda and Gastropoda both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gasteropoda	Yes	No	No	No
Gastropoda	Yes	No	No	No

As nouns, Gasteropoda and Gastropoda are synonyms defined as:

Other synonyms of Gasteropoda include class Gasteropoda, class Gastropoda.

Gasteropoda (noun)	Gastropoda (noun)
snails and slugs and their relatives	snails and slugs and their relatives