1. focus on, center on, revolve around, revolve about, concentrate on, center, refer, pertain, relate, concern, come to, bear on, touch, touch on, have-to doe with
usage: center upon; "Her entire attention centered on her children"; "Our day revolved around our work"
2. revolve around, circle around, circle round, circle
usage: move around in a circular motion; "The Earth revolves around the Sun"