counter for buildings, roofs, tents
Used to count buildings, roofs, tents, and similar structures. Often seen in formal or written contexts; in casual speech, 軒 (けん) is more common for houses and buildings.
This shrine has three shrine buildings.
Five tents were pitched at the campsite.
From the kanji 宇, which originally means 'eaves' or 'roof', extended to count roofed structures.