Greyhound and Mongrel

Greyhound noun - A tall slender dog of an ancient breed noted for swiftness and keen sight; used as a racing dog.

Mongrel and greyhound are semantically related. In some cases you can use "Mongrel" instead a noun "Greyhound".

Mongrel noun - An offspring of parents with different genes especially when of different races, breeds, species, or genera.

Greyhound and mongrel are semantically related. Sometimes you can use "Greyhound" instead a noun "Mongrel".