The word "sahuaro" is commonly used to refer to the iconic cactus plants found in the southwestern United States and Mexico. However, there are a few synonyms that can also be used to describe this plant. One of the most commonly used terms is "saguaro," which is a variation of the same word. Other synonyms include the "giant cactus," which highlights the impressive size of these plants, and the "candelabra cactus," which refers to their branching shape. Some people also refer to them as "desert sentinels," due to their towering form and commanding presence in the desert landscape.