The names given to describe the number of lines in a stanzaic unit, such as: couplet (2), tercet (3), quatrain (4), quintet (5), sestet (6), septet (7), and octave (8). Some stanzas follow a set rhyme scheme and meter in addition to the number of lines and are given specific names to describe them, such as, ballad meter, ottava rima, rhyme royal, terza rima, and Spenserian stanza