Collocations for user - noun

heavy, large
heavy users of credit The larger users of the service have to pay more.

small | daily, regular | current, existing
Existing users will be able to upgrade their software at a reduced price.

first-time, novice
They offer a short course to first-time users of the software.

end
The company supplies its computers direct to the end user.

computer, PC | business, home
a computer intended for business and home users

bus, car, rail, road, transport | wheelchair
A special entrance is being built for wheelchair users.

library | service
a survey of health service users

telephone | electricity, energy | drug, heroin, etc.