How to say 'For a [period of time]'

1. What is another way of saying period of time?
2. How do you write period of time in a sentence?

What is another way of saying period of time?

Some common synonyms of period are age, epoch, and era. While all these words mean "a division of time," period may designate an extent of time of any length.

How do you write period of time in a sentence?

1. Set aside a period of time specifically for study. 2. She should be hospitalized for a period of time.