simulacrum vs effigy

simulacrum and effigy both are nouns.

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

As nouns, simulacrum and effigy are synonyms defined as:

simulacrum and effigy: a representation of a person (especially in the form of sculpture)

Other synonyms of simulacrum include image.

simulacrum (noun)	effigy (noun)
a representation of a person (especially in the form of sculpture)	a representation of a person (especially in the form of sculpture)
an insubstantial or vague semblance