Energy?

As defined by Merriam-Webster, energy can be defined as one of these five things:

-"the capacity of acting or being active"

-"a usually positive spiritual force"

-"vigorous exertion of power"

-"a fundamental entity of nature that is transferred between parts of a system in the production of physical change within the system and usually regarded as the capacity for doing work"

-"usable power (as heat or electricity); the resources for producing such power"

As you can see, 'energy' is defined as many different things, some of them seeming completely unrelated. I guess the point that we are trying to get to is that 'energy' can fit many definitions and is probably over-used and used improperly the majority of the time.