usually when the word receiver is used its referring to the ability to receive the FM signal decode (de modulate) preamp-amplify and output the speaker level signal.
so for listening only
Antenna-FM receiving section and decoder ( or FM de-modulator)-preamp-amp-speakers.
for transmitting you need to add a source mic, CD player, etc - encoder or properly called FM modulator- Preamp - Amplifier - Antenna.
note the encoder-decoder or modulator is many different blocks I'm not going to break these down do some research on the individual sections if you need more information.
you need to find out if you need to just receive or receive and transmit.