any specific behavior

proceed towards a goal or along a path or through an activity

cause to work

exert oneself by doing mental or physical work for a purpose or out of necessity

operate in a certain place, area, or specialty

the work of cleansing (usually with soap and water)

the most important or interesting work or activity in a specific area or field

a damaging piece of work

the performance of a piece of work

a process or series of acts especially of a practical or mechanical nature involved in a particular form of work