order Cydippidea vs Cydippida

order Cydippidea and Cydippida both are nouns.

Word	Noun	Adjective	Verb	Adverb
order Cydippidea	Yes	No	No	No
Cydippida	Yes	No	No	No

As nouns, order Cydippidea and Cydippida are synonyms defined as:

order Cydippidea and Cydippida: ctenophores having two long pinnate tentacles

Other synonyms of order Cydippidea include Cydippea, Cydippidea, order Cydippea, order Cydippida.

order Cydippidea (noun)	Cydippida (noun)
ctenophores having two long pinnate tentacles	ctenophores having two long pinnate tentacles