wrapper vs plastic film

wrapper and plastic film both are nouns.

Word	Noun	Adjective	Verb	Adverb
wrapper	Yes	No	No	No
plastic film	Yes	No	No	No

As nouns, plastic film is a hyponym of wrapper; that is, plastic film is a word with a more specific, narrower meaning than wrapper:

wrapper: the covering (usually paper or cellophane) in which something is wrapped
plastic film: a thin sheet of (usually plastic and usually transparent) material used to wrap or cover things

Other hyponyms of wrapper include envelope, film, gift wrapping, jacket, plastic wrap.

wrapper (noun)	plastic film (noun)
cloak that is folded or wrapped around a person	a thin sheet of (usually plastic and usually transparent) material used to wrap or cover things
a loose dressing gown for women
the covering (usually paper or cellophane) in which something is wrapped