Enclosure
You just received a building, so you want to surround it with an enclosure.
Imagine the building you just received. You want to protect it, so you get started on that enclosure. Imagine building your enclosure with your bare hands.
かく
くるわ
None
The enclosure felt a bit quiet and lonely, so you decided to get yourself a pet cock (かく).
Your pet cock is the perfect addition to your new enclosure. Just look at it, pecking happily between the enclosure and that building you received.