member vs fang

member and fang both are nouns.

Word	Noun	Adjective	Verb	Adverb
member	Yes	No	No	No
fang	Yes	No	No	No

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

member: an external body part that projects from the body
fang: an appendage of insects that is capable of injecting venom; usually evolved from the legs

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

member (noun)	fang (noun)
an external body part that projects from the body	hollow or grooved tooth of a venomous snake; used to inject its poison
the male sex organ	canine tooth of a carnivorous animal; used to seize and tear its prey
an organization that is a member of another organization (especially a state that belongs to a group of nations)	an appendage of insects that is capable of injecting venom; usually evolved from the legs
one of the persons who compose a social group (especially individuals who have joined and participate in a group organization)
anything that belongs to a set or class