Robot

A robot is a virtual or mechanical artificial agent. In practice, it is usually an electro-mechanical system which, by its appearance or movements, conveys a sense that it has intent or agency of its own. The word robot can refer to both physical robots and virtual software agents, but the latter are usually referred to as bots.

People have a generally positive perception of the robots they actually encounter. Domestic robots for cleaning and maintenance are increasingly common in and around homes. It is composed entirely, or almost entirely, from artificial substances. It can sense its environment, and manipulate with things in it.

There is anxiety, however, over the economic effect of automation and the threat of robotic weaponry, anxiety which is not helped by the depiction of many villainous, intelligent, acrobatic robots in popular entertainment. Compared with their fictional counterparts, real robots are still benign, dim-witted, and clumsy. 

It has some ability to make choices based on the environment, often using automatic control or a preprogrammed sequence. It is programmable. It moves with one or more axes of rotation or translation. It makes dexterous coordinated movements. It appears to have intent or agency.