detector vs radio receiver

detector and radio receiver both are nouns.

Word	Noun	Adjective	Verb	Adverb
detector	Yes	No	No	No
radio receiver	Yes	No	No	No

detector (noun)	radio receiver (noun)
any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner	an electronic receiver that detects and demodulates and amplifies transmitted signals
electronic equipment that detects the presence of radio signals or radioactivity
rectifier that extracts modulation from a radio carrier wave