os frontale vs forehead

os frontale and forehead both are nouns.

Word	Noun	Adjective	Verb	Adverb
os frontale	Yes	No	No	No
forehead	Yes	No	No	No

As nouns, os frontale and forehead are synonyms defined as:

os frontale and forehead: the large cranial bone forming the front part of the cranium: includes the upper part of the orbits

Other synonyms of os frontale include frontal bone.

os frontale (noun)	forehead (noun)
the large cranial bone forming the front part of the cranium: includes the upper part of the orbits	the part of the face above the eyes
	the large cranial bone forming the front part of the cranium: includes the upper part of the orbits