Not seen around here. We call them male and female in our language.
To consider the pins and ermm.. the holes as 'convex' and 'concave' respectively, that would be quite extreme convex and concave. To me convex and concave is a limited deviation from flat. And what about the straight part of the pin or the hole. No way that can be interpreted as convex or concave.
I have seen once that 'master and slave' networks are frowned upon. Dont remember where I saw that.
To consider the pins and ermm.. the holes as 'convex' and 'concave' respectively, that would be quite extreme convex and concave. To me convex and concave is a limited deviation from flat. And what about the straight part of the pin or the hole. No way that can be interpreted as convex or concave.
I have seen once that 'master and slave' networks are frowned upon. Dont remember where I saw that.