• 食堂しょくどう — cafeteria / dining hall
• 講堂こうどう — lecture hall
• 堂々どうどう — dignified / grand
• 寺院堂じいんどう — temple building
• 正堂せいどう — main hall

堂 combines 土 (earth/ground) at the base with elements above that suggest elevation and structure. It represents a raised, formal building such as a temple, lecture hall, or public gathering place, emphasizing dignity and grandeur.