English bulldog and Working dog

English bulldog noun - A sturdy thickset short-haired breed with a large head and strong undershot lower jaw; developed originally in England for bull baiting.

Working dog and English bulldog are semantically related. In some cases you can use "Working dog" instead a noun phrase "English bulldog".

Working dog noun - Any of several breeds of usually large powerful dogs bred to work as draft animals and guard and guide dogs.

English bulldog and working dog are semantically related. Sometimes you can replace phrase "English bulldog" with "Working dog", this phrases are similar.