Saturn square Lilith (orb 0.5°) creates concrete friction between the two planets. The orb is extremely tight; this aspect is one of the chart's strongest signals.
Here, Saturn in Aquarius in House 10 brings discipline, constraint, endurance, and mastery into House 10 (vocation, status, responsibility, and public image), with Aquarius style (independence, networks, distance, and collective change); Lilith in Scorpio in House 7 brings pure ideal, absolute demand, fascination, and refusal of compromise into House 7 (relationship, confrontation, and the mirror of others), with Scorpio style (intensity, desire, crisis, secrecy, and invisible power).
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 Midheaven (orb 4.8°) and Lilith near the Descendant (orb 2.9°) touch angles; this aspect is easier to notice through social role, reputation, career, and public image; also through direct relationships, partners, opponents, and the way others are met. House 10 (vocation, status, responsibility, and public image) is in friction with House 7 (relationship, confrontation, and the mirror of others); this can create blockage, inhibition, overreaction, or repeated conflict between the two fields.