ethmoid bone vs ethmoid

ethmoid bone and ethmoid both are nouns.

Word	Noun	Adjective	Verb	Adverb
ethmoid bone	Yes	No	No	No
ethmoid	Yes	No	No	No

As nouns, ethmoid bone and ethmoid are synonyms defined as:

ethmoid bone and ethmoid: one of the eight bones of the cranium; a small bone filled with air spaces that forms part of the eye sockets and the nasal cavity

ethmoid bone (noun)	ethmoid (noun)
one of the eight bones of the cranium; a small bone filled with air spaces that forms part of the eye sockets and the nasal cavity	one of the eight bones of the cranium; a small bone filled with air spaces that forms part of the eye sockets and the nasal cavity