bottle-nosed whale vs bottlenose whale

bottle-nosed whale and bottlenose whale both are nouns.

Word	Noun	Adjective	Verb	Adverb
bottle-nosed whale	Yes	No	No	No
bottlenose whale	Yes	No	No	No

As nouns, bottle-nosed whale and bottlenose whale are synonyms defined as:

bottle-nosed whale and bottlenose whale: northern Atlantic beaked whale with a bulbous forehead

Other synonyms of bottle-nosed whale include bottlenose, Hyperoodon ampullatus.

bottle-nosed whale (noun)	bottlenose whale (noun)
northern Atlantic beaked whale with a bulbous forehead	northern Atlantic beaked whale with a bulbous forehead