שעה

They work there for many hours, but today they are at home.

Sometimes I read for hours at night, but today I am reading only a newspaper.

How many hours do you work every day?

She decided to stay in the office for another hour, because she has a lot of work.

She was bored too, so we sat together and read in the library for one hour.

I think that the most important difference is in the work hours.

We have been trying to solve this problem for an hour already, but we still have not found a solution.