This kind of piece is really a theme and variations. Another common type of piece is the Prelude and Fugue, two movements. The first is free-form, often melodic like a short sonata, or constructed of chords; the second is made like a round, like Row, Row, Row Your Boat except WAY more complicated.
Borne [borne] as a boys' name has its root in Middle English, and Borne means stream. Borne is an alternate form of Bourne (Middle English): place name.
The past tense of to bear is bore. For example: They bore gifts for the chief. You bore a remarkable resemblance to your mother when you were younger. The past passive participle of to bear is borne. For example: The burden borne by the managerial team was simply too heavy.