see above!
i think google will help you
google it
SID are "exits" and STAR are "arrive"
SIDs are departure "routes" which navigates you to your fist waypoint and STARS are arrival routes which navigates you from your last waypoint to the final approach from the runway
SID stands for Standard Instrument Departure.
STAR stands for Standard Instrument arrival
https://www.skybrary.aero/index.php/SIDs_and_STARs
you can think about them as preplanned routes after start and before landing
Procedures to leave (SID) or arrive at the airport (STAR). But you need to read on IFR flying rules.
Great!!!!!!!!!!!!!!!