wight vs somebody

wight and somebody both are nouns.

Word	Noun	Adjective	Verb	Adverb
wight	Yes	No	No	No
somebody	Yes	No	No	No

As nouns, somebody is a hypernym of wight; that is, somebody is a word with a broader meaning than wight:

wight: a living being
somebody: a human being; person, singular, assertive existential pronoun; pronoun, person, singular; quantifier: assertive existential

Other hypernyms of wight include individual, mortal, person, someone, soul.

wight (noun)	somebody (noun)
a living being	a human being; person, singular, assertive existential pronoun; pronoun, person, singular; quantifier: assertive existential