simulacrum vs waxwork

simulacrum and waxwork both are nouns.

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

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

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

Other hyponyms of simulacrum include Guy, god, graven image, idol, bird-scarer, scarecrow, scarer, straw man, strawman, wax figure, close-up.

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