Ser vs Estar
There are two verbs in Spanish that have the English meaning to be. These verbs are Ser and Estar. Each of these verbs has very definite uses, and they are not interchangeable. The verb Ser is derived from the latin verb esse, from which is also derived also the English word essence. The verb ser is therefore used to express an inherent quality or characteristic. The verb estar, on the other hand, is derived from the latin verb stare, from which is also derived the English word state. The verb Estar is therefore used to express, often, a temporary state or condition.