Dark as a wolf's mouth and Dark as the inside of a black

Dark as the inside of a black and dark as a wolf's mouth are semantically related. In some cases you can replace phrase "Dark as the inside of a black" with "Dark as a wolf's mouth", this phrases are similar.

Dark as a wolf's mouth and dark as the inside of a black are semantically related. Sometimes you can replace phrase "Dark as a wolf's mouth" with "Dark as the inside of a black", this phrases are similar.