I thought that "Talk Around" and "Reverse" were two ways of referring to the same thing: swapping a channel's transmit and receive frequencies so that one could e.g. listen for other stations trying to reach a downed repeater. However, my Anytone radios expose both "Talk Around" and "Reverse" as options. What makes them different?
Talkaround: Transmitting and receiving on the repeater output frequency. Thus, you "talk around" the repeater directly with the other station. (Same as simplex). Both stations in a conversation can do this.
Reverse: Switching transmit and receive frequencies. Thus, you can talk directly to another station that is still on the repeater's frequency. But if both stations reverse, then they can not hear each other.