Neptune square Lilith (orb 3.6°) creates concrete friction between the two planets. The orb is moderate; it stays secondary beside tighter signatures.
Here, Neptune in Libra in House 4 brings imagination, image, popularity, collective moods, and inspiration into House 4 (roots, privacy, and inner foundation), with Libra style (relationship, balance, negotiation, and sense of form); Lilith in Capricorn in House 6 brings pure ideal, absolute demand, fascination, and refusal of compromise into House 6 (daily work, technique, and bodily discipline), with Capricorn style (structure, ambition, responsibility, and long construction).
Concrete friction: this aspect puts Neptune (imagination, image, popularity, collective moods, and inspiration) 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: Lilith near the Descendant (orb 4.6°) touches an angle; this aspect is easier to notice through direct relationships, partners, opponents, and the way others are met. House 4 (roots, privacy, and inner foundation) is in friction with House 6 (daily work, technique, and bodily discipline); this can create blockage, inhibition, overreaction, or repeated conflict between the two fields.