appendage vs chela

appendage and chela both are nouns.

Word	Noun	Adjective	Verb	Adverb
appendage	Yes	No	No	No
chela	Yes	No	No	No

As nouns, chela is a hyponym of appendage; that is, chela is a word with a more specific, narrower meaning than appendage:

Other hyponyms of appendage include chelicera, mouthpart, fang, claw, nipper, pincer, parapodium, fin, pleopod, swimmeret, limb, dactyl, digit.

appendage (noun)	chela (noun)
a part that is joined to something larger	a Hindu disciple of a swami
an external body part that projects from the body	a grasping structure on the limb of a crustacean or other arthropods
a natural prolongation or projection from a part of an organism either animal or plant