for soldier
rj/rocketjump - shoot a rocket at the ground, it explodes and boosts you. using jump and crouch makes you go higher/further.
walljump - when you rocket jump off a wall instead of the ground. also used for rocket jumps off walls after the original RJ.
wallshots - rocket jumps after the first one where you shoot off walls.
pogo - holding yourself up with explosions from rockets shot at the ground (hold fire)
wallpogo - pogoing on a wall instead of the ground
drop pogo - is pogoing down (variations are single wall and 'double wall'/corner drop pogo)
wallclimb - is pogoing up, also used for rocket jumping up
skip - can be any kind of 'skip', including speedshots. some people consider skipping as only when you dont touch the ground tho.
speedshot - is when you barely tap the ground and skip off it, the timing is pretty hard but it gives you a huge boost.
speedpogo - pogoing with speed. usually called pogoing instead of skipping because you hold fire and there isnt a real delay between shots
double - when you jump off of two rockets that explode at the same time
triple - 3^
quad - 4x etc
syncing - anything that you sync rockets together for, like triple/quad rj's
other stuff:
airstrafe - turning in midair using strafe keys and the mouse.
waterjump - rocket jumping in water to get more of a boost than a normal RJ.
flick jump - when you do a 180* turn, rocket jump, and turn back forwards. (usually just called rocketjump)
ducktap/ctap - type of rocket jump that goes further than a normal RJ crouch/shoot/jump. considerably harder.
rampslide - when you slide up or sideways on a ramp, maintaining your speed
waterslide - pressing jump in the water to glide over it and maintain speed
edge slide - bouncing off the edge of the ground without any rockets
roofshot - rocket jumping off the ceiling
prefire - shooting a rocket which is going to explode/be used later
doubleskip - when you prefire a rocket then skip off the ground at the same time as your first rocket hits the ground.
double catch - same thing as a double skip, but used to start a pogo on the ground.
double wall catch - same thing as a double skip but when you do it on a wall to start a wallpogo
double walljump - when you prefire a rocket then walljump at the same time as your first rocket hits the wall.
glitch pogo/skip - where you get a really big pogo/jump off of ground that you cant touch.
spaced out triple/quad - when you fall and sync 3 rockets with a slight space inbetween them
circle skip - rocket jumping up and doing a 360* turn and then a speedshot.
backstrafe - airstrafing (turning in midair) while travelling backwards
surfing - sliding on ramps. usually used with surf maps and not as much in jumping.
boost jumping - term no one says (usually for skipping without touching the ground)
rocket surfing - weird term that can mean skipping or pogoing (jumping off an enemies rocket is the real meaning)
bhop/bunnyhopping - strafing and jumping every time you touch the ground to go faster/jump further. barely does anything in TF2.
airpogo - midair rocket jumping can be done by soldier if your rocket explodes on a teammate whos also in the air.
theres more variations like triple skip but ya
thats all i could think of