Homonym: Transient (Ephemeral)
"Transient" refers to something that is temporary or short-lived. It can describe people, events, or conditions that do not last for a long time. For example, a transient population may include individuals who move frequently, such as travelers or seasonal workers.
In a broader context, the term can also apply to phenomena in nature, like a transient storm that quickly passes through an area. In science, particularly in physics, "transient" can refer to temporary changes in a system, such as a transient electrical signal that occurs for a brief moment before stabilizing.