@2old is mostly correct though for quick release wheels it would be QR141 vs QR135 and for thru-axles which is where boost is typically used it would be 12x148 (as stated) from a 12x142. A thru-axle will be a thicker long bolt that goes from one side of your dropouts to the other and threads into the dropouts it can only go in one way and is a more secure way when using disc brakes. In some cases thru-axles will use a QR style closure but will be a very thick axle at 12mm and the front will either be 12mm for the average road and gravel bike to 15mm for some old gravel and most mountain bikes and then 20mm for your downhill bikes (there is a different variation of 20mm axles from early DH bikes but your bike does not qualify)

Some modern road bikes have moved to a 12x110 standard at the front where your average for both QR and Thru-axle is 100mm and on more modern mountain bikes you have 15x110.

Also more useless trivia for you at the moment but you also have super boost rear ends which are 157mm and really the reason for wider and wider is for a better bracing angle which leads to a stronger wheel especially as things get wider tire wise so frames have to widen out to accommodate. To make it even more confusing older downhill bikes had a similar size that was a different fit as it was essentially a narrow hub with wider axles.

Basically the bike industry goes hey we have a problem with too many standards, let's invent a new one to solve that problem and now we have 1 more standard.