This is the 1719th most frequent Chinese word.
周五
Friday.
Here, '周五' indicates a specific day of the week, similar to a date marker.
周五是我的生日。
Friday is my birthday.
In this sentence, '周五' functions as a time indicator specifying when the action will occur.
我周五会去看电影。
I will go to watch a movie on Friday.
Here, '周五' serves to propose a date for scheduling an activity or event.