>>As Dan Freeman likes to say, how come we drive on a parkway and park in a driveway? And why is abbreviation such a long word?
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>Yeah, and why is monosyllabic a pentasyllabic word?

Why is a "self-defining term" a self-defining term, and a "not self-defining term" is also a "self-defining term"? Why is a TLA a TLA (three letter acronym) while FLA is not a FLA (4-letter)?