Pluto square Lilith (orb 1.4°) creates concrete friction between the two planets. The orb is very tight; this describes a stable character pattern more than a passing reaction.
Here, Pluto in Leo in House 12 brings crisis, power, survival, and regeneration into House 12 (retreat, contemplation, long time, and possible confinement), with Leo style (presence, pride, creation, and the wish to be seen); Lilith in Taurus in House 9 brings pure ideal, absolute demand, fascination, and refusal of compromise into House 9 (vision, belief, study, and wider horizons), with Taurus style (nature, good food, physical sensuality, roots, resources, and perseverance).
Concrete friction: this aspect creates friction between Lilith (pure ideal, absolute demand, fascination, and refusal of compromise) and Pluto's crisis instinct: pressure can become domination, fear, or destructive escalation unless it receives a clear outlet. Visible angle: Lilith near the Midheaven (orb 0.3°) 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 9 (vision, belief, study, and wider horizons); this can create blockage, inhibition, overreaction, or repeated conflict between the two fields.