crystal set vs radio receiver

crystal set and radio receiver both are nouns.

Word	Noun	Adjective	Verb	Adverb
crystal set	Yes	No	No	No
radio receiver	Yes	No	No	No

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

crystal set: an early radio receiver using a crystal detector
radio receiver: an electronic receiver that detects and demodulates and amplifies transmitted signals

Other hypernyms of crystal set include radio, radio set, receiving set, tuner, wireless.

crystal set (noun)	radio receiver (noun)
an early radio receiver using a crystal detector	an electronic receiver that detects and demodulates and amplifies transmitted signals