* Muerto is the masculine form, used for male people or animals.
* Muerta is the feminine form, used for female people or animals.
For example:
* El hombre está muerto. (The man is dead.)
* La mujer está muerta. (The woman is dead.)
Other ways to say "dead" in Spanish include:
* Fallecido/fallecida (deceased) - This is a more formal and respectful way to refer to someone who has died.
* Difunto/difunta (deceased) - This is another formal and respectful term.
* Extinto/extinta (extinct) - This word can be used to describe something that is no longer alive, such as a species.
The best choice of word depends on the context and the level of formality.