Couplet
Part of speech: noun
Definition: In poetry, a pair of lines with rhyming end words.
Couple
Part of speech: verb
Definition: To join (two things) together, or (one thing) to (another).
Part of speech: noun
Definition: Two partners in a romantic or sexual relationship.Two of the same kind connected or considered together (see Usage notes).A small number of. See usage notes.One of the pairs of plates of two metals which compose a voltaic battery, called a voltaic couple or galvanic couple.Two forces that are equal in magnitude but opposite in direction (and acting along parallel lines), thus creating the turning effect of a torque or moment.
Example sentence: If you think nobody cares if you're alive, try missing a couple of car payments.