tuner vs radio receiver

tuner and radio receiver both are nouns.

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

As nouns, tuner and radio receiver are synonyms defined as:

tuner and radio receiver: an electronic receiver that detects and demodulates and amplifies transmitted signals

Other synonyms of tuner include radio, radio set, receiving set, wireless.

tuner (noun)	radio receiver (noun)
an electronic receiver that detects and demodulates and amplifies transmitted signals	an electronic receiver that detects and demodulates and amplifies transmitted signals
someone who tunes a musical instrument