Caponize is a surgical procedure commonly performed on roosters and involves the removal of the testes. This procedure renders the bird infertile and results in a more tender and flavorful meat. Some synonyms for caponize include geld, emasculate, and castrate. However, there are some subtle differences in these terms. Gelding generally refers to the removal of testes in male horses, while emasculate can also refer to the removal of masculinity or power. Castrate can be used to describe the removal of testes in any male animal but can also refer to the removal of ovaries in females. Nonetheless, all these terms imply the removal of reproductive organs, with the goal of altering or improving the animal's characteristics.