0 two people who are doing something together -- pareja
1 two things that look the same and that are used together -- par, pareja
2 something that is made of two parts that are joined together -- par, unos, unas
3 two things that are the same and are used together -- par [ masculine, singular ]
a pair of socks/shoes/gloves un par de calcetines/zapatos/guantes
4 sth that has two parts that are the same -- par [ masculine, singular ]
a pair of sunglasses/shorts/scissors un par de gafas de sol/pantalones cortos/tijeras
5 to make a pair, or to put two people or things together as a pair -- emparejar