close-up vs simulacrum

close-up and simulacrum both are nouns.

Word	Noun	Adjective	Verb	Adverb
close-up	Yes	No	No	No
simulacrum	Yes	No	No	No

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

close-up: A photographic (or other) image in which the subject is shown at a relatively large scale, and occupies most or all of the frame
simulacrum: a representation of a person (especially in the form of sculpture)

Other hypernyms of close-up include effigy, image.

close-up (noun)	simulacrum (noun)
A photographic (or other) image in which the subject is shown at a relatively large scale, and occupies most or all of the frame	a representation of a person (especially in the form of sculpture)
	an insubstantial or vague semblance