There are three different terms that can be used when talking about a female cat: molly, queen, and dam. The term "molly" is a general term that can be used to refer to any female cat, regardless of age or reproductive status. "Queen" is used to describe a female cat that has not been spayed and has reached sexual maturity, as well as during pregnancy and the nursing period. "Dam" is a term that is typically only used as part of a cats paperwork, and it refers to a purebred female cat that is used specifically for breeding. However, its good to note that "molly" is the most commonly used term for female cats in everyday conversation.