Moon square Neptune (orb 1.6°) 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 Libra 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 Libra style (relationship, balance, negotiation, and sense of form); Neptune in Cancer in House 11 brings imagination, image, popularity, collective moods, and inspiration 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, ideal image, projection, and inner permeability. House 3 (speech, learning, and the close environment) 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.