medium wave vs radio wave

medium wave and radio wave both are nouns.

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

As nouns, radio wave is a hypernym of medium wave; that is, radio wave is a word with a broader meaning than medium wave:

medium wave: a radio wave with a wavelength between 100 and 1000 meters (a frequency between 300 kilohertz and 3000 kilohertz)
radio wave: an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m

Other hypernyms of medium wave include radio emission, radio radiation.

medium wave (noun)	radio wave (noun)
a radio wave with a wavelength between 100 and 1000 meters (a frequency between 300 kilohertz and 3000 kilohertz)	an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m