waxwork vs simulacrum

waxwork and simulacrum both are nouns.

Word	Noun	Adjective	Verb	Adverb
waxwork	Yes	No	No	No
simulacrum	Yes	No	No	No

As nouns, simulacrum is a hypernym of waxwork; that is, simulacrum is a word with a broader meaning than waxwork:

waxwork: an effigy (usually of a famous person) made of wax
simulacrum: a representation of a person (especially in the form of sculpture)

Other hypernyms of waxwork include effigy, image.

waxwork (noun)	simulacrum (noun)
an effigy (usually of a famous person) made of wax	a representation of a person (especially in the form of sculpture)
twining shrub of North America having yellow capsules enclosing scarlet seeds	an insubstantial or vague semblance