In Chinese culture, “大” (dà) carries more weight than just physical size. It often implies importance, seniority, and respect.
This is the most direct and common usage. It can be used for any object, person, or place.
“大” is used to ask about age and to refer to the oldest sibling.
As an adverb, “大” can mean “greatly,” “heavily,” or “loudly.”
“大” is used to signify that something is major, important, or significant.