Not too many folks out here refer to them as sockets
anymore;
that term is typically reserved for light bulbs, though there is some
variation,
based on age, and geographical location.
This is one of those cases where the UK and US usage is very different.
In the UK, the thing a bulb goes into is a 'lampholder' (maybe a
'bulbholder', although that's normally for smaller bulbs). A 'Socket'
is
a female conneotor, a thing a plug goes into. Note that the correct
useage is the socket is the frmale part, the plug is the male part, no
matter wether it's mounted on a panel/chassis or fitted to the end of a
cable.
The term 'Jack' does not mean a socket (as it seems to in the States), it
is a particualr type of connector, basically the ones yoy call 'phone
plugs'. Think of the connector on the end of stereo headphones. Over here
that's called a 'jack plug'. And of course what it plugs into is a 'jack
socket'
The term 'recepticle' might be used for a socket (but it wouldn't be
common). More often it means the female part of a 'faston' connector (to
cause more confusion, often called a 'Lucar spade' over here), the male
part being called a 'blade'
-tony