TV reporter vs television newscaster

TV reporter and television newscaster both are nouns.

Word	Noun	Adjective	Verb	Adverb
TV reporter	Yes	No	No	No
television newscaster	Yes	No	No	No

As nouns, TV reporter and television newscaster are synonyms defined as:

TV reporter and television newscaster: someone who reports news stories via television

Other synonyms of TV reporter include television reporter, TV newsman.

TV reporter (noun)	television newscaster (noun)
someone who reports news stories via television	someone who reports news stories via television