The spot is the exit point — the position over the ground where the aircraft releases jumpers so that, allowing for wind drift, they can comfortably fly back to the landing area.
Wind makes it a calculation
Jumpers drift with the wind during freefall and under canopy. Winds aloft may be considerably stronger, and in a different direction, from what is felt on the ground. The spot accounts for that.
A bad spot leaves jumpers unable to reach the landing area, resulting in an off-field landing — an unfamiliar area with unknown hazards, which is why spotting is taken seriously and taught as a skill.
Jump run
Jump run is the aircraft's flight path over the spot, usually flown into wind. Groups exit in a sequence spaced to maintain horizontal separation, which is why exit order on a mixed load is briefed rather than improvised.
These pages explain what things are so the language makes sense. They are not instruction and cannot substitute for it — skydiving is taught in person by rated instructors at a drop zone, and anything involving equipment handling or emergency procedures belongs there rather than on a web page.