Hyzer - Releasing the disc with the outter edge at an angle lower than parallel to the ground. This will cause the most discs to curve to the left.
Anhyzer - Releasing the disc with the outter edge at an higher than parallel to the ground. This will cause the most discs to curve to the right.
High Speed Turn - The characteristic of a disc to curve to the right at the beginning of its flight when thrown hard.
Low Speed Fade - The natural tendency of a disc to tail left as it slows down at the end of its flight.
Overstable - A term used to describe the relative resistance to high speed turn and amount of low speed fade of a disc. A more overstable disc will generally have higher resistance to turn and greater low speed fade.
Understable - A term used to describe a disc with relatively low resistance to high speed turn and less low speed fade.
Turnover - The term used to describe the flight of a disc that curves to the right when thrown flat or at hyzer. A less overstable or understable disc will generally be easier to turn over.
Nose Down - Releasing the disc with the front end of the disc lower than the back end. Certain discs will fly better when thrown nose down.
Nose Up - Releasing the disc with the front end of the disc higher than the back end.
Stall Out - A term used to describe the flight of a disc when it peaks in height and drops off to the left without much glide. This generally occurs when the disc is thrown with the nose up.
S-Curve - A term used to describe the flight of a disc when it begins by turning to the right and then "flexes" out and glides back to the left.
Roller - A type of throw where the disc is turned over so far that it lands on its edge and rolls.
Snap - A term used to describe the armspeed and power a player gets into their throw. More snap will generally make the disc fly faster and further.
If you don't already please learn the difference between stable & overstable. Those words are not interchangeable.