The Vietnamese word "dãy" is a noun that primarily means "chain," "row," or "line." It is used to refer to a series of things that are arranged in a sequence or in a straight line.
Dãy nhà: This phrase means "a row of houses." It refers to multiple houses that are lined up next to each other.
Dãy ghế: This means "a row of chairs." It can refer to chairs arranged in a line, like in a classroom or theater.