blower vs aquatic mammal

blower and aquatic mammal both are nouns.

Word	Noun	Adjective	Verb	Adverb
blower	Yes	No	No	No
aquatic mammal	Yes	No	No	No

As nouns, aquatic mammal is a hypernym of blower; that is, aquatic mammal is a word with a broader meaning than blower:

blower: large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales, dolphins, porpoises, narwhals
aquatic mammal: whales and dolphins, manatees and dugongs, walruses, seals

blower (noun)	aquatic mammal (noun)
large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales, dolphins, porpoises, narwhals	whales and dolphins, manatees and dugongs, walruses, seals
a device that produces a current of air
a fan run by an electric motor