Homonym: since (Conjunction)
The word "since" is commonly used to indicate a point in time when something began. For example, you might say, "I have lived here since 2010." In this case, "since" connects the present situation to a specific past event, showing that the action started in 2010 and continues to the present.
Additionally, "since" can also express a cause-and-effect relationship. For instance, "Since it was raining, we stayed indoors." Here, "since" explains why the action of staying indoors occurred, linking the reason (the rain) to the outcome (staying inside).