A catcher is a player in baseball whose main role is to catch pitches thrown by the pitcher. However, there are other terms used to refer to the position. One alternative is "backstop," which is derived from the back wall behind home plate. Another synonym is "receiver," which relates to the player's ability to receive the pitch. In some countries, the position is called "wicket-keeper," a term originating from cricket. Other terms include "maskman," "battery keeper," and "fence guard." Overall, these synonyms provide insight into the varied roles and responsibilities of the catcher position in baseball.