Moon square Pluto (orb 1.3°) creates concrete friction between the two planets. The orb is very tight; this describes a stable character pattern more than a passing reaction.
Here, Moon in Aries in House 9 brings personal dream, play, inner child, childhood imprint, mother figure, mother image, optimism, and inner rhythm into House 9 (vision, belief, study, and wider horizons), with Aries style (initiative, speed, confrontation, and direct action); Pluto in Cancer in House 11 brings crisis, power, survival, and regeneration into House 11 (networks, audience, groups, ideas, ideologies, political beliefs, and collective projects), with Cancer style (memory, protection, belonging, and family sensitivity).
Concrete friction: this aspect creates tension between personal dream, childhood, mother image, control, and fear: protection can become suspicion, grip, or overreaction. House 9 (vision, belief, study, and wider horizons) is in friction with House 11 (networks, audience, groups, ideas, ideologies, political beliefs, and collective projects); this can create blockage, inhibition, overreaction, or repeated conflict between the two fields.