radio receiver vs detector

radio receiver and detector both are nouns.

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

radio receiver (noun)	detector (noun)
an electronic receiver that detects and demodulates and amplifies transmitted signals	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
	electronic equipment that detects the presence of radio signals or radioactivity
	rectifier that extracts modulation from a radio carrier wave