This is the 677th most frequent Arabic word.
نصف
"Half."
نصف here quantifies a fraction, specifying one-half of a kilometer.
الطريق يحتوي على نصف كيلو متر من الأضواء.
The road contains half a kilometer of lights.
نصف is used to describe a portion of the coffee consumed, specifically half.
شربت نصف الكوب من القهوة.
I drank half of the cup of coffee.
Here, نصف represents a portion of the group (the students), indicating a quantity of one-half.