rectifier vs detector

rectifier and detector both are nouns.

Word	Noun	Adjective	Verb	Adverb
rectifier	Yes	No	No	No
detector	Yes	No	No	No

As nouns, detector is a hyponym of rectifier; that is, detector is a word with a more specific, narrower meaning than rectifier:

rectifier: electrical device that transforms alternating into direct current
detector: rectifier that extracts modulation from a radio carrier wave

Other hyponyms of rectifier include demodulator, full-wave rectifier.

rectifier (noun)	detector (noun)
electrical device that transforms alternating into direct current	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
a person who corrects or sets right	electronic equipment that detects the presence of radio signals or radioactivity
	rectifier that extracts modulation from a radio carrier wave