Flock
Your buddy the sheep is part of a flock. A flock of sheep. Your sheep buddy is a member of a flock.
ぐん
む, むら
None
Now take out your gun (ぐん) and murder every sheep in the flock. Except for your buddy. You’re incredibly jealous of your buddy and you don’t like the attention his flock gives him so that’s why you decided to murder them all with a gun.