That's also how I was brought up, but I think that there are a good few people who regard (and probably always have regarded) something 'free' as a 'plug' and something 'fixed' as a 'socket' - hence, for them, a 'plug' is something 'free' (attached to a cable) which they 'plug into' something 'fixed' (which they therefore regard as a 'socket') - although I'm not sure what they then say about a pair of mated 'free' male and female connectors!Well I was taught that a plug, just like 'male' has pins and a socket has holes, just like a 'female' and have found no confusion with that.
As Jackrae has said, to avoid confusion/ambiguity one needs to indicate both gender and whether 'free' or 'fixed'.
Kind Regards, John