Categorization of spawns by hold length: For a positive integer n, an "n-away" is an orb that must be held a minimum of n ticks for it to be scored from your position. Certain spawns have a different value of n depending on where you are standing.
Diagonal loss: a tick loss caused by an orb traversing one diagonal square in 2 ticks by means of moving one square horizontally and then one square vertically, when it could have traversed it in one tick with a different strategy by the player(s). Applicable mainly with 2 or more players, where respawn time becomes increasingly important.
In 3v0s and 4v0s, the most common type of diagonal loss is, say, west attracting the 2-away at (5, -3) when north could have attracted it.