ROW' (3 letters) The term LEVEL OF SEATS is composed of two crossword solutions: TIER and ROW. TIER is a four-letter word that refers to a set of rows of seats in a stadium, theater, or other venue. ROW is a three-letter word that refers to a line of seats in a theater, stadium, or other venue. Together, these two words refer to the arrangement of seating in a venue, with each TIER consisting of multiple rows.