Cur and Pie-dog

Cur noun - A person who shows a shameful lack of courage in the face of danger.

Pie-dog and cur are semantically related. In some cases you can replace phrase "Pie-dog" with "Cur", this terms are similar.

Pie-dog noun - Ownerless half-wild mongrel dog common around Asian villages especially India.

Cur and pie-dog are semantically related. You can use "Cur" instead a noun phrase "Pie-dog".