Intro Spanish Lesson: The verb "ser"

The video tutorial explains the difference between the Spanish verbs 'estar' and 'ser', both meaning 'to be'. 'Estar' is used for temporary states, such as emotions or physical conditions, while 'ser' is used for permanent states, like nationality, profession, or inherent characteristics. Examples are provided to illustrate the use of 'ser' in various contexts.

How would you use 'estar' to express an emotional state?

What types of characteristics are described using the verb 'ser'?