os triquetrum vs triquetral

os triquetrum and triquetral both are nouns.

Word	Noun	Adjective	Verb	Adverb
os triquetrum	Yes	No	No	No
triquetral	Yes	No	No	No

As nouns, os triquetrum and triquetral are synonyms defined as:

os triquetrum and triquetral: a wrist bone that articulates with the pisiform and hamate and lunate bones

Other synonyms of os triquetrum include cuneiform bone, pyramidal bone, triquetral bone.

os triquetrum (noun)	triquetral (noun)
a wrist bone that articulates with the pisiform and hamate and lunate bones	a wrist bone that articulates with the pisiform and hamate and lunate bones