Nocturnal emissions, also known as "wet dreams," refer to the involuntary release of semen during sleep. Although it is a natural and normal occurrence, some people find it embarrassing or uncomfortable to talk about. There are several synonyms for nocturnal emissions including "sleep orgasms," "nighttime emissions," and "nocturnal orgasms." These terms are often used as more discreet and polite ways of referring to the same phenomenon. Despite the different wording, it's important to remember that nocturnal emissions are a common and healthy part of human sexuality and development, and should not be a cause for shame or guilt.