baleen whale vs whalebone whale

baleen whale and whalebone whale both are nouns.

Word	Noun	Adjective	Verb	Adverb
baleen whale	Yes	No	No	No
whalebone whale	Yes	No	No	No

As nouns, baleen whale and whalebone whale are synonyms defined as:

baleen whale and whalebone whale: whale with plates of whalebone along the upper jaw for filtering plankton from the water

baleen whale (noun)	whalebone whale (noun)
whale with plates of whalebone along the upper jaw for filtering plankton from the water	whale with plates of whalebone along the upper jaw for filtering plankton from the water