An amateur is generally consiered a person attached to a particular pursuit, study, or science, without formal training or pay. Conversely, an expert is generally considered a person with extensive knowledge, ability, and/or training in a particular area of study, while a professional is someone who also makes a living from it. Translated from its French origin to the English "lover of", the term "amateur" reflects a voluntary motivation to work as a result of personal passion for a particular activity.