Is Backyard One Word Or Two

Backyard Playground, Backyard For Kids, Backyard Kids, Outdoor Play

Is Backyard One Word Or Two. An area at the rear of a house 2 :

Backyard Playground, Backyard For Kids, Backyard Kids, Outdoor Play
Backyard Playground, Backyard For Kids, Backyard Kids, Outdoor Play

An area at the rear of a house 2 :

An area at the rear of a house 2 : An area at the rear of a house 2 :