There are several synonyms for the word "diamondback rattlesnake." One of the commonly used terms is the Eastern Diamondback Rattlesnake, which is found in the southeastern United States. Another synonym for the diamondback is the Crotalus adamanteus, which is the scientific name for this venomous reptile. The Western Diamondback Rattlesnake is another subspecies of the diamondback, found in the western United States and Mexico. The Texas Diamondback Rattlesnake is also known as the Western Diamondback, found in the southwestern United States and northern Mexico. All of these snakes are characterized by their diamond-shaped patterns on their skin and the distinct rattle at the end of their tails.