This is the 2808th most frequent Arabic word.
شهرين
"Two months"
In this sentence, 'شهرين' refers to the time span required to accomplish the activity.
استغرقت الرحلة شهرين حتى النهاية.
The journey took two months to complete.
In this sentence, 'شهرين' (two months) is used in the accusative case to indicate a specific duration of time.
لقد انتظرت شهرين لك.
I waited for you for two months.
Here, 'شهرين' is used to describe the length of time the subject spent doing an action, accompanied by an adjective for emphasis.