TV show vs pilot film

TV show and pilot film both are nouns.

Word	Noun	Adjective	Verb	Adverb
TV show	Yes	No	No	No
pilot film	Yes	No	No	No

As nouns, pilot film is a hyponym of TV show; that is, pilot film is a word with a more specific, narrower meaning than TV show:

TV show: a program broadcast by television
pilot film: a program exemplifying a contemplated series; intended to attract sponsors

Other hyponyms of TV show include colorcast, colourcast, pilot, pilot program, sitcom, situation comedy, special.

TV show (noun)	pilot film (noun)
a program broadcast by television	a program exemplifying a contemplated series; intended to attract sponsors