Mars square Lilith (orb 2.5°) creates concrete friction between the two planets. The orb is tight enough to count in the main reading.
Here, Mars in Cancer in House 12 brings action, courage, competition, and effort into House 12 (retreat, contemplation, long time, and possible confinement), with Cancer style (memory, protection, belonging, and family sensitivity); Lilith in Aries in House 10 brings pure ideal, absolute demand, fascination, and refusal of compromise into House 10 (vocation, status, responsibility, and public image), with Aries style (initiative, speed, confrontation, and direct action).
Concrete friction: this aspect creates tension between anger, desire, action, impossible ideal, and refusal to yield. Visible angle: Lilith near the Midheaven (orb 2.4°) touches an angle; this aspect is easier to notice through social role, reputation, career, and public image. House 12 (retreat, contemplation, long time, and possible confinement) 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.