Energy unit and Joule

Energy unit noun - A unit of measurement for work.

Joule and energy unit are semantically related. In some cases you can replace term "Joule" with "Energy unit", this terms are similar.

Joule noun - A unit of electrical energy equal to the work done when a current of one ampere passes through a resistance of one ohm for one second.

Energy unit and joule are semantically related. Sometimes you can use "Energy unit" instead a noun "Joule".