The term "executant" refers to a person who performs a musical piece or a piece of literature. However, there are synonyms that can be used interchangeably with this term. The first synonym is "executor," which means someone who carries out a task or performs a piece of music. Another synonym for "executant" is "performer," which refers to someone who acts out or plays a part in a drama or a musical production. "Interpreter" is another synonym that can be used for "executant," indicating a performer who brings their own interpretation to a piece of music or literature. Additionally, "player" and "musician" can also be used as synonyms for "executant".