tea bowl or "chawan" (茶碗), holds a central place.  It signifies hospitality, respect, and mindfulness.  The aesthetics, size, shape, and even the nuances of the chawan are considered important in the tea ceremony, reflecting the season, occasion, and the preferences of the host and the guests.  The chawan is used not just for serving but also for drinking matcha, whisked powdered green tea, symbolizing the connection between the host and the guest in a shared moment of tranquility and appreciation.