Accquantance
Someone you have no intimate or meaningful relationship with; but can possibility be familiar with common interests and backgrounds. But in most cases, they are just strangers that you've just met and unfamiliar with.
Strangers or just people whom you might share a common activity or background, whom you'd enjoy their presence to hang out and etc doesn't fit to being a friend, if they don't got your back. They are people of less intimate relations that we call accquantance (s), that won't have a meaningful out come at the end of the day.