* A topic of discussion: "El tema de la conversación fue el cambio climático." (The topic of the conversation was climate change.)
* A subject of study: "El tema principal del curso es la historia de España." (The main subject of the course is the history of Spain.)
* A theme in a piece of art or literature: "El tema de la película es la pérdida de la inocencia." (The theme of the movie is the loss of innocence.)
It's a versatile word that can encompass a wide range of meanings related to the central idea or focus of something.