Square
A tense 90-degree angle between two points — a friction that tends to press for a decision rather than let things sit.
A square sits at 90 degrees, a quarter turn around the chart's wheel, and it tends to be read as pressure: the two points involved want genuinely different things, and the tension between them doesn't resolve on its own the way a sextile's ease does. This isn't automatically a bad thing; a lot of real, lasting change gets credited to squares specifically, because they push a person to actually choose rather than drift. It commonly falls between signs of the same modality, cardinal, fixed or mutable, which share a similar way of moving but want to move in different directions. Where an opposition puts two things face to face, a square puts them at an angle that has to be worked out rather than simply balanced.