television program vs television show

television program and television show both are nouns.

Word	Noun	Adjective	Verb	Adverb
television program	Yes	No	No	No
television show	Yes	No	No	No

As nouns, television program and television show are synonyms defined as:

television program and television show: a program broadcast by television

Other synonyms of television program include TV program, TV show.

television program (noun)	television show (noun)
a program broadcast by television	a program broadcast by television