simulacrum vs close-up

simulacrum and close-up both are nouns.

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

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

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

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

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