Cis forConstruction
Construction is the process of building or constructing something, or used to describe the result of this process. For example, "That is a fine construction".
A coop is a cage, generally in the ground, for keeping animals like chickens inside.
To coop up means to keep someone in a small space, for example "my apartment is so small I'm all cooped up in there".
Cis forCubby house
A cubby house or wendy house is a small building for children to play in. They are usually built in people's backyards out of wood.