Acquaintance

A person known casually.

casual friend

An acquaintance is someone you know, but not very well; a person whom one knows casually.

/əˈkweɪntəns/

From Old French aconnaistance, from acoinnaistre (to make known), from Latin cognoscere (to get to know).

friend associate contact

enemy stranger

relationship social connection

colleague neighbor

social network

social concept