pinniped vs pinnatiped

pinniped and pinnatiped both are nouns.

Word	Noun	Adjective	Verb	Adverb
pinniped	Yes	No	No	No
pinnatiped	Yes	No	No	No

As nouns, pinniped and pinnatiped are synonyms defined as:

pinniped and pinnatiped: aquatic carnivorous mammal having a streamlined body specialized for swimming with limbs modified as flippers

Other synonyms of pinniped include pinniped mammal.

pinniped (noun)	pinnatiped (noun)
aquatic carnivorous mammal having a streamlined body specialized for swimming with limbs modified as flippers	aquatic carnivorous mammal having a streamlined body specialized for swimming with limbs modified as flippers