Moon square Saturn (orb 1.1°) 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 Sagittarius in House 11 brings personal dream, play, inner child, childhood imprint, mother figure, mother image, optimism, and inner rhythm into House 11 (networks, audience, groups, ideas, ideologies, political beliefs, and collective projects), with Sagittarius style (expansion, travel, belief, and the search for meaning); Saturn in Pisces in House 2 brings discipline, constraint, endurance, and mastery into House 2 (resources, values, and security), with Pisces style (imagination, faith, compassion, dream, and permeability).
Concrete friction: this aspect can make the personal dream and mother image feel supervised by Saturn: play, spontaneity, or childlike confidence meets fear, duty, restraint, or the need to hold it together. House 11 (networks, audience, groups, ideas, ideologies, political beliefs, and collective projects) is in friction with House 2 (resources, values, and security); this can create blockage, inhibition, overreaction, or repeated conflict between the two fields.