A social skill is any
Social skills are the tools that enable people to communicate, learn, ask for help, get their needs met in appropriate ways, get along with others, make friends and develop healthy relationships, protect themselves, and generally be able to interact with the society harmoniously.  Social skill builds essential character traits like trustworthiness, respectfulness, responsibility, fairness, caring, and citizenship. These traits help to build an internal moral compass, allowing individuals to make good choices in thinking and behavior, resulting in social competence.
Social skills are goal oriented with both main- and sub-goals. For example, a workplace interaction initiated by a new employee with a senior employee at first will be with the main goal to gather information and the sub goal will be to establishing rapport in order to obtain the main goal.[