What are the differences between horseradish and wasabi in terms of flavor, spiciness, and culinary uses?

Horseradish and wasabi are both spicy condiments, but they have distinct differences. Horseradish has a strong, pungent flavor with a sharp heat that hits the sinuses, while wasabi has a more delicate, herbal flavor with a quick, intense spiciness that dissipates quickly. Culinary uses vary as well, with horseradish commonly used in sauces, dips, and as a sandwich spread, while wasabi is often served with sushi and sashimi.