Difference between pigtails and jumpers

A lot of people say that I have seen pigtails, And I'm dizzy. I want to buy one. I'll check it out. As a result, this guy bought the patch cord and it was cut by someone else, the pigtails and jumpers are different. I am speechless. In fact, pigtails and jumpers are a kind of patch cords. the Jumpers are cut from the middle and two pigtails. See the figure below!

 

Pigtails,

Jumper

As you can see, the difference between jumper and pigtails is that there are several activity headers.

Pigtails: one end has a connector, and the other end is a broken head of the fiber core. Connect to other optical fiber cables through fusion.
Pigtails: Mainly used to connect the splices at both ends of the optical fiber. The pigtail end is connected to the optical fiber connection, and the other end is connected to the optical fiber transceiver or optical fiber module through special connectors to form the optical data transmission path.

Jumper: both ends of patch cords are active connectors. To connect pigtails and devices.