heterodyne receiver vs wireless

heterodyne receiver and wireless both are nouns.

Word	Noun	Adjective	Verb	Adverb
heterodyne receiver	Yes	No	No	No
wireless	Yes	Yes	No	No

As nouns, wireless is a hypernym of heterodyne receiver; that is, wireless is a word with a broader meaning than heterodyne receiver:

heterodyne receiver: a radio receiver that combines a locally generated frequency with the carrier frequency to produce a supersonic signal that is demodulated and amplified
wireless: an electronic receiver that detects and demodulates and amplifies transmitted signals

Other hypernyms of heterodyne receiver include radio, radio receiver, radio set, receiving set, tuner.

heterodyne receiver (noun)	wireless (noun)
a radio receiver that combines a locally generated frequency with the carrier frequency to produce a supersonic signal that is demodulated and amplified	a communication system based on broadcasting electromagnetic waves
	an electronic receiver that detects and demodulates and amplifies transmitted signals
	transmission by radio waves
	medium for communication

heterodyne receiver (adjective)	wireless (adjective)
	having no wires