Edit: My new understanding
Front flip: on axis flip thrown forwards
Backflip: on axis flip thrown backwards
Spin: on axis spin, thrown to the left or right. Called left and right spins, or natural and unnatural spins. Natural is the riders preferred direction of spin.
Lincoln Loop/sideflip: an on axis flip thrown to the side. Often done imperfectly a little bit off axis.
Cork: off axis non-inverted spin thrown backwards
Bio: off axis non-inverted spin thrown forwards
D-spin: off axis inverted backflip thrown with a spin
Misty: off axis inverted front flip thrown with a spin
Flair/Underflip: on axis backflip thrown with a slow constant spin, usually just a 180° spin (can be thought of as a 90° rotation, Lincoln loop thrown up the hill, then another 90° rotation)
Barani/Overflip: on axis frontflip thrown with a slow constant spin, usually just a 180° spin (can be thought of as a 90° rotation, Lincoln loop thrown down the hill, then another 90° rotation)
Rodeo: off axis inverted backflip with a spin thrown the opposite the direction the flip is corked. (Example: An off axis inverted backflip thrown over the left shoulder with a left spin is a d-spin. An off axis backflip thrown over the right shoulder with a left spin is a rodeo.)
Flatspin: a backwards corked spin thrown in the style of a rodeo. Like a rodeo but not inverted. (Example: A backwards corked non-inverted left spin but thrown over the right shoulder is a flatspin)
If anyone sees anything wrong with this plz lmk
**This post was edited on Jan 25th 2021 at 11:29:05am