skill is the learned ability to act with determined results with good execution often within a given amount of time, energy, or both. Skills can often be divided into domain-general and domain-specific skills. For example, in the domain of work, some general skills would include time management, teamwork and leadership, self-motivation and others, whereas domain-specific skills would be used only for a certain job. Skill usually requires certain environmental stimuli and situations to assess the level of skill being shown and used.
A skill may be called an art when it represents a body of knowledge or branch of learning, as in the art of medicine or the art of war. Although the arts are also skills, there are many skills that form an art but have no connection to the fine arts.
People need a broad range of skills to contribute to the modern economy. A joint ASTD and U.S. Department of Labor study showed that through technology, the workplace is changing, and identified 16 basic skills that employees must have to be able to change with it. Three broad categories of skills are suggested and these are technical, human, and conceptual. The first two can be substituted with hard and soft skills, respectively.
Hard skills, also called technical skills, are any skills relating to a specific task or situation. It involves both understanding and proficiency in such specific activity that involves methods, processes, procedures, or techniques. These skills are easily quantifiable unlike soft skills, which are related to one's personality. These are also skills that can be or have been tested and may entail some professional, technical, or academic qualification.
Holistic competencies is an umbrella term for different types of generic skills (e.g. critical thinking, problem-solving skills, positive values, and attitudes (e.g. resilience, appreciation for others) which are essential for life-long learning and whole-person development.
Skilled workers have long had historical import (see Division of labor) as electricians, masons, carpenters, blacksmiths, bakers, brewers, coopers, printers and other occupations that are economically productive. Skilled workers were often politically active through their craft guilds.
An ability and capacity acquired through deliberate, systematic, and sustained effort to smoothly and adaptively carry out complex activities or job functions involving ideas (cognitive skills), things (technical skills), and/or people (interpersonal skills). 
- understanding ourselves and moderating our responses
- talking effectively and empathizing accurately
- building relationships of trust, respect and productive interactions.
Social skills are any skills facilitating interaction and communication with others. Social rules and relations are created, communicated, and changed in verbal and nonverbal ways. The process of learning such skills is called socialization.: 5 
Soft skills are a combination of interpersonal people skills, social skills, communication skills, character traits, attitudes, career attributes and emotional intelligence quotient (EQ) among others.