well lets see, now days you could say they are bi gender pins and plugs, because the male pins are in a female plug and the male has female ends but i will explain the best i can,
pin meaning female and plug meaning male.

If i am sticking something inside of something then what goes inside is male

alright we had our first class on male vs.female. I learned that about 50 years ago.

I may be wrong now days, but it has worked for me for years.