The term 'move spirally' can be described by four different words: GYRATE (6 letters), TWIRL (5 letters), GYRE (4 letters), and SWIRL (5 letters). GYRATE is a verb meaning to move in a circle or spiral, while TWIRL is a synonym for GYRATE. GYRE is a noun meaning a circular or spiral motion, and SWIRL is another verb meaning to move in a circular or spiral motion. All of these words describe the same action of moving in a circular or spiral pattern.