Couplet

In describing verse and verse forms, a couplet is the name given to any two lines thought of as a pair. Couplets may be paired by rhyme: the rhyme scheme is the simplest there is, being a a. When such lines are iambic pentameters, the pair is known as a heroic couplet. This was perhaps the favourite form of verse in the Augustan phase of English verse, which predominated between about 1690 and 1780.