So out of all this rant:
Common slang for currency - money. End of story.
Money is the units of the measure of value that not only represent value but also have value. Examples would be gold,silver,oil, salt
Like the units of the measure of length that not only represent length but also have length. Examples would be inch worn, barleycorn, ruler, cubit
Currency is the units of the measure of value that has no value but represents value. Examples would be a promise, bitcoin, digits in a computer, bonds
Like the units of the measure of length that have no length themselves but represents length. Examples would be inch, meter, mile.
When we are talking about money we are talking about inch worms when we are talking about currency we are talking about inches.
Not really. When i ask a friend if he has any money (got twenty bucks?), i don't particularly care what form it's in -- if he has 20 one dollar bills, two tens, or a single twenty. I'm looking for a specific value, not a specific number of bills.
If i needed tangible units (got any quarters?), i'm specifically interested in the physical tokens.
Not sure if you're interested in semantics & just want more precise definitions (in that case you seem to be widening them by calling oil "money"), or if i'm missing your point.