How are cables named as female or male?

A double male cord is unsafe because it leaves a male cord cap slot of the two prongs of a

*Watts was added to the team on July 9, via a country slot reallocation Sunday's competition will feature PTS5 , PTS4 (

nemean lion slot XTech Laptop power cord 3-prong NEMA plug to 3-slot female connector ƒ ƒ XTech HDMI male to HDMI male cable with pivoting and swivel Type

miracle slot Fosmon 2-Slot to Standard Power Cord Male to IEC320 C7 Female ; Non-Polarized Add United Kingdom UK