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: Relationships are eternal. The 'separation' is another chapter in the relationship. Often, letting go of the old form of the relationship becomes a lesson in pure love much deeper than any would have learned had the couple stayed together.
Twosome
Part of speech: noun
Definition: A group of two