* Luego: This is the most common way to say later. It can be used in both formal and informal settings.
* Después: This is another way to say later. It is also used in both formal and informal settings.
* Más tarde: This is a less common way to say later. It is used more often in formal settings than informal ones.
* Posterior: This is a very formal way to say later. It is mostly used in academic and professional settings.