cetacean mammal vs cetacean

cetacean mammal and cetacean both are nouns.

Word	Noun	Adjective	Verb	Adverb
cetacean mammal	Yes	No	No	No
cetacean	Yes	Yes	No	No

As nouns, cetacean mammal and cetacean are synonyms defined as:

cetacean mammal and cetacean: large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales, dolphins, porpoises, narwhals

Other synonyms of cetacean mammal include blower.

cetacean mammal (noun)	cetacean (noun)
large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales, dolphins, porpoises, narwhals	large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales, dolphins, porpoises, narwhals

cetacean mammal (adjective)	cetacean (adjective)
	of or relating to whales and dolphins etc