clock radio vs radio

clock radio and radio both are nouns.

Word	Noun	Adjective	Verb	Adverb
clock radio	Yes	No	No	No
radio	Yes	Yes	Yes	No

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

clock radio: a radio that includes a clock that can be set to turn it on automatically
radio: an electronic receiver that detects and demodulates and amplifies transmitted signals

Other hypernyms of clock radio include radio receiver, radio set, receiving set, tuner, wireless.

clock radio (noun)	radio (noun)
a radio that includes a clock that can be set to turn it on automatically	a communication system based on broadcasting electromagnetic waves
	an electronic receiver that detects and demodulates and amplifies transmitted signals
	medium for communication

clock radio (adjective)	radio (adjective)
	indicating radiation or radioactivity

clock radio (verb)	radio (verb)
	transmit messages via radio waves