Today lets define the word COUPLE. Shall we???
COUPLE---> Its underlying notion is of "joining," coming from the Latin copula, "connection, tie."
two people who regularly associate with each other or live together
two people considered as a pair, for or as if for dancing, games, maybe a shared cup of coffee
to connect (two things) together or to connect (one thing) to (another)
to form or be formed into a pair or pairs
to join or be joined in marriage
a pair who associate with one another; "the engaged couple"; "an inseparable twosome".