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Not sure if it is Canadian specific, but measuring energy is also a confusing one. We have BTU, kWh, Joule, calorie, kilocalorie…
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You are right in that they are used in different contexts, however, this is just due to social practices. They are all measuring the same physical property: energy. This is part of what makes the concept of energy so confusing to many people.
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Yes, but as far as physics is concerned, all energy is the same, just takes on different forms.