Square · 90° apart
Square
Same modality, clashing elements. Genuine friction, and genuine momentum: this pairing produces change, not comfort.
Earth · Cardinal · ruled by Saturn
Brings. Plans in decades and executes without needing encouragement along the way.
Struggles with. Measures worth by achievement, and struggles to rest without guilt.
In love. Undemonstrative but dependable. Commitment is shown by showing up, not by saying so.
Air · Cardinal · ruled by Venus
Brings. Sees every side of a dispute and can make opposing parties feel heard.
Struggles with. Avoids decisions to avoid disappointing anyone, which disappoints everyone eventually.
In love. Partnership-oriented to the core. Uncomfortable alone, sometimes to its own cost.
Capricorn is cardinal earth; Libra is cardinal air. Sharing a modality means handling change the same way, which sounds helpful and often means competing for the same role.
Sun signs are one factor among many, and astrology itself treats them as a starting point rather than a verdict. Two full charts describe far more than two birthdays do.