Thuja

Arborvitae trees and shrubs are popular as ornamental plants, grown for their attractive, scale-like leaves and dense, conical habit. They are commonly used as hedges, windbreaks, privacy screens, and foundation plantings. Arborvitae is also used for its wood, which is lightweight, fragrant, and resistant to decay, and is used in construction, furniture-making, and woodcrafts.

Here’s an article about The Best Fast-Growing Privacy Trees For The Yard.