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.
Conveyance (noun) the instrument or means of carrying or transporting anything from place to place; the vehicle in which, or means by which, anything is carried from one place to another; as, stagecoaches, omnibuses, etc., are conveyances; a canal or aqueduct is a conveyance for water. Conveyance (noun)