Guenon monkey and Old World monkey

Guenon monkey noun - Small slender African monkey having long hind limbs and tail and long hair around the face.

Old World monkey and guenon monkey are semantically related. In some cases you can use "Old World monkey" instead a noun phrase "Guenon monkey".

Old World monkey noun - Of Africa or Arabia or Asia; having nonprehensile tails and nostrils close together.

Guenon monkey and Old World monkey are semantically related. Sometimes you can replace phrase "Guenon monkey" with "Old World monkey", this phrases are similar.