• a device for connecting parts of machinery

• the pairing of two items

• the action of mating or having sexual intercourse

Synonyms: sexual intercourse, sex, lovemaking, making love, sex act, act of love, sexual relations, intimate relations, intimacy, coupling, mating, going to bed with someone, sleeping with someone

• two people in a romantic relationship; a couple

Synonyms: vice, clamp, press

• two people or things of the same sort considered together

Synonyms: pair, duo, duology, twosome, set of two, match

• two people who are married or otherwise closely associated romantically or sexually

Synonyms: husband and wife, twosome

• an indefinite small number

Synonyms: a few, two or three, a small number of

• link or combine (something) with something else

Synonyms: combine, integrate, mix, incorporate, accompany, link, team, associate, connect, ally

• mate or have sexual intercourse

Synonyms: mate, couple, breed