Moon square Mars (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, Moon in Sagittarius in House 3 brings personal dream, play, inner child, childhood imprint, mother figure, mother image, optimism, and inner rhythm into House 3 (speech, learning, and the close environment), with Sagittarius style (expansion, travel, belief, and the search for meaning); Mars in Virgo in House 12 brings action, courage, competition, and effort into House 12 (retreat, contemplation, long time, and possible confinement), with Virgo style (precision, method, usefulness, and attention to detail).
Concrete friction: this aspect creates live tension between the inner child, mother image, and Mars: vulnerability, protection, or the need for safety can turn into anger, inhibition, or defense, sometimes through a weak, inhibiting, or castrating mother image. House 3 (speech, learning, and the close environment) is in friction with House 12 (retreat, contemplation, long time, and possible confinement); this can create blockage, inhibition, overreaction, or repeated conflict between the two fields.