comb-plate vs ctene

comb-plate and ctene both are nouns.

Word	Noun	Adjective	Verb	Adverb
comb-plate	Yes	No	No	No
ctene	Yes	No	No	No

As nouns, comb-plate and ctene are synonyms defined as:

comb-plate and ctene: a locomotor organ consisting of a row of strong cilia whose bases are fused

comb-plate (noun)	ctene (noun)
a locomotor organ consisting of a row of strong cilia whose bases are fused	a locomotor organ consisting of a row of strong cilia whose bases are fused