Saturn square Lilith (orb 5°) creates concrete friction between the two planets. The orb is moderate; it stays secondary beside tighter signatures.
Here, Saturn in Sagittarius in House 7 brings discipline, constraint, endurance, and mastery into House 7 (relationship, confrontation, and the mirror of others), with Sagittarius style (expansion, travel, belief, and the search for meaning); Lilith in Pisces in House 10 brings pure ideal, absolute demand, fascination, and refusal of compromise into House 10 (vocation, status, responsibility, and public image), with Pisces style (imagination, faith, compassion, dream, and permeability).
Concrete friction: this aspect puts Saturn (discipline, constraint, endurance, and mastery) and Lilith (pure ideal, absolute demand, fascination, and refusal of compromise) into repeated friction: one can interrupt, inhibit, or provoke the other in concrete situations. Visible angle: Saturn near the Descendant (orb 2.5°) and Lilith near the Midheaven (orb 2.3°) touch angles; this aspect is easier to notice through direct relationships, partners, opponents, and the way others are met; also through social role, reputation, career, and public image. House 7 (relationship, confrontation, and the mirror of others) is in friction with House 10 (vocation, status, responsibility, and public image); this can create blockage, inhibition, overreaction, or repeated conflict between the two fields.