os hyoideum vs hyoid

os hyoideum and hyoid both are nouns.

Word	Noun	Adjective	Verb	Adverb
os hyoideum	Yes	No	No	No
hyoid	Yes	Yes	No	No

As nouns, os hyoideum and hyoid are synonyms defined as:

os hyoideum and hyoid: a U-shaped bone at the base of the tongue that supports the tongue muscles

Other synonyms of os hyoideum include hyoid bone.

os hyoideum (noun)	hyoid (noun)
a U-shaped bone at the base of the tongue that supports the tongue muscles	a U-shaped bone at the base of the tongue that supports the tongue muscles

os hyoideum (adjective)	hyoid (adjective)
	of or relating to the hyoid bone