Clearly there are many types of robots and lots of areas where they can be used. Typical applications of robots are:
Industrial – the main use of robots for many years
Entertainment – increasingly more and more toys
Military – such as UAV’s (Unmanned Aerial Vehicle), UGV’s (Unmanned Ground Vehicle), triage and surveillance.
Service, including dispensing food and cleaning
Exploration, including in space
Hazardous environments – sending robots to work where it is best for humans to stay away
Cleaning, etc
Laboratory specimens
Surgery, rehabilitation, physiotherapy
As an indication of how these applications are changing, the Japanese Robotics Association has made projections of the sales of robots from 2010 – 2035. Their analysis shows that although industrial robots have been the mainstay for the robotics industry, there will be an increasing importance for service and medical robots.