os trapezoideum vs trapezoid bone

os trapezoideum and trapezoid bone both are nouns.

Word	Noun	Adjective	Verb	Adverb
os trapezoideum	Yes	No	No	No
trapezoid bone	Yes	No	No	No

As nouns, os trapezoideum and trapezoid bone are synonyms defined as:

os trapezoideum and trapezoid bone: the wrist bone between the trapezium and the capitate bones

Other synonyms of os trapezoideum include trapezoid.

os trapezoideum (noun)	trapezoid bone (noun)
the wrist bone between the trapezium and the capitate bones	the wrist bone between the trapezium and the capitate bones