carpus vs articulatio plana

carpus and articulatio plana both are nouns.

Word	Noun	Adjective	Verb	Adverb
carpus	Yes	No	No	No
articulatio plana	Yes	No	No	No

As nouns, articulatio plana is a hypernym of carpus; that is, articulatio plana is a word with a broader meaning than carpus:

carpus: a joint between the distal end of the radius and the proximal row of carpal bones
articulatio plana: a freely moving joint in which the articulations allow only gliding motions

Other hypernyms of carpus include gliding joint.

carpus (noun)	articulatio plana (noun)
a joint between the distal end of the radius and the proximal row of carpal bones	a freely moving joint in which the articulations allow only gliding motions