A male connector is commonly referred to as a plug and has a solid pin for a center conductor. A female connector is commonly referred to as a jack and has a center conductor with a hole in it to accept the male pin. Click here for a video on the difference between male and female D-sub connectors.
Considering this, what is the difference between a male and female connector?
The difference between Male and Female connectors is simple. Just like people the Male has a sticking out “pin” which he plugs into something. The Females on the other hand have a “hole” in which to receive something, usually a “pin”!
What is the difference between a jack and a plug?
Jack commonly refers to a connector often with the female electrical contact or socket, and is the "more fixed" connector of a connector pair. Plug commonly refers to a movable connector, often (but not always) with the male electrical contact or pin, and is the movable (less fixed) connector of a connector pair.
What is a male or female thread?
A short pipe fitting having an FIP thread at both ends is sometimes called a coupling. Hermaphroditic connections, which include both male and female elements in a single unit, are used for some specialized tubing fittings, such as Storz fire hose connectors.