Cur and Half-bred

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

Half-bred and cur are semantically related In some cases you can use "Half-bred" instead a noun "Cur".

Half-bred adjective - (of animals) having only one purebred parent.

Cur and half-bred are semantically related in sibling sharing one parent topic. You can use "Cur" instead a noun phrase "Half-bred".