ROI

A significant decline in economic activity lasting more than a few months. Commonly defined as two consecutive quarters of negative GDP.

Potential gain divided by potential loss on a trade. 2:1 means risking $1 to make $2.

Relative Strength Index — a momentum oscillator (0–100). Above 70 = overbought, below 30 = oversold.

A scam where developers abandon a project after raising funds, leaving holders with worthless tokens.