Cydippida vs Cydippidea

Cydippida and Cydippidea both are nouns.

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

As nouns, Cydippida and Cydippidea are synonyms defined as:

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

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