Nowadays, "reverse" is suppressed in most ways. I have heard that Nginx is a proxy more often than a reverse proxy.
Valodim
Except in the configuration where you use the reversep_proxy directive, of course
daveguy
How about service proxy vs web proxy rather than reverse proxy and proxy? Makes more clear that one is a proxy on the service side and the other is a proxy on the client side. Service proxy and Client proxy might be even better.