Patch cords are usually produced in many different colors so as to be easily distinguishable, and are relatively short, perhaps no longer than two metres.
Twisted pair Cat5, Cat5e, or Cat6 cables using 8P8C ( RJ-45) modular connectors with T568A or T568B wiring

A patch cord is always fitted with connectors at both ends. A pigtail is similar to a patch cord and is the informal name given to a cable fitted with a connector at one end and bare wires ( or bare fiber) at the other. The non-connectorized end ( ' the pigtail' ) is intended to be permanently attached to a component or terminal.