The Spanish verb 'estar' comes from the Latin verb 'stare', which meant 'to stand'. Over time, the meaning evolved from the physical act of standing to indicate a state of being or location. This is why 'estar' is used in Spanish to express temporary states, conditions, locations, and emotions - concepts that can be thought of as 'standing' in a particular state or place.

Several common Spanish words are related to 'estar', including 'estado' (state), 'estación' (station/season), and 'estable' (stable). All these words carry the underlying concept of being in a particular state or position. For example, 'estado' refers to a condition or state of being, while 'estación' refers to a place where something stands (like a train station) or a standing point in the yearly cycle (a season).

English has many words derived from the same Latin root 'stare', including 'state', 'station', 'status', 'stable', and 'stay'. Notice how all these words relate to the concept of standing, remaining, or being in a particular condition. For instance, 'stay' means to remain in a place, similar to how 'estar' is used to indicate location in Spanish. 'State' refers to a condition or status, just as 'estar' is used to describe temporary conditions.