Keywords: pair, both
As a Noun
Two things that are the same size and shape and are intended to be used together. English = pair.
Two people who are standing or walking together or who have some kind of relationship with each other. English = pair.
As a Verb or Adjective
Of people, to become grouped in pairs. English = pair up, form pairs, pair off.
You use this sign when you are referring to two people or things and saying that something is true about each of them. English = both.