This is the 10060th most frequent Japanese word.
通勤
Commuting to work.
In this sentence, 通勤 refers to the period or activity of traveling to work.
彼女は通勤時間を読書に使っています。
She uses her commuting time for reading.
Here, 通勤 indicates the concept or method of commuting itself.
通勤には電車が便利です。
Trains are convenient for commuting.
In this sentence, 通勤 is used to describe daily travel to work.