radio emission vs radio wave

radio emission and radio wave both are nouns.

Word	Noun	Adjective	Verb	Adverb
radio emission	Yes	No	No	No
radio wave	Yes	No	No	No

As nouns, radio emission and radio wave are synonyms defined as:

radio emission and radio wave: an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m

Other synonyms of radio emission include radio radiation.

radio emission (noun)	radio wave (noun)
an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m	an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m