bladdernose vs hooded seal

bladdernose and hooded seal both are nouns.

Word	Noun	Adjective	Verb	Adverb
bladdernose	Yes	No	No	No
hooded seal	Yes	No	No	No

As nouns, bladdernose and hooded seal are synonyms defined as:

bladdernose and hooded seal: medium-sized blackish-grey seal with large inflatable sac on the head; of Arctic and northern Atlantic waters

Other synonyms of bladdernose include Cystophora cristata.

bladdernose (noun)	hooded seal (noun)
medium-sized blackish-grey seal with large inflatable sac on the head; of Arctic and northern Atlantic waters	medium-sized blackish-grey seal with large inflatable sac on the head; of Arctic and northern Atlantic waters