Jupiter square Neptune (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, Jupiter in Aquarius in House 9 brings personal fulfillment, confidence, encouragement, and broader horizons into House 9 (vision, belief, study, and wider horizons), with Aquarius style (independence, networks, distance, and collective change); Neptune in Taurus in House 12 brings imagination, image, popularity, collective moods, and inspiration into House 12 (retreat, contemplation, long time, and possible confinement), with Taurus style (nature, good food, physical sensuality, roots, resources, and perseverance).
Concrete friction: this aspect creates tension between confidence, promise, ideal, image, and vagueness: Jupiter pushes toward a wider personal horizon, while Neptune can make the direction too blurred or fantasized. House 9 (vision, belief, study, and wider horizons) 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.