Moon square Mars (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 Aquarius in House 5 brings personal dream, play, inner child, childhood imprint, mother figure, mother image, optimism, and inner rhythm into House 5 (creation, performance, and personal expression), with Aquarius style (independence, networks, distance, and collective change); Mars in Scorpio in House 3 brings action, courage, competition, and effort into House 3 (speech, learning, and the close environment), with Scorpio style (intensity, desire, crisis, secrecy, and invisible power).
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 5 (creation, performance, and personal expression) is in friction with House 3 (speech, learning, and the close environment); this can create blockage, inhibition, overreaction, or repeated conflict between the two fields.