center on

verbs

center upon
"Her entire attention centered on her children"; "Our day revolved around our work"
center, center on, concentrate on, focus on, revolve about, revolve around
have as a center
"The region centers on Charleston"
center on
is a type of (narrower)
occupy a certain position or area; be somewhere
"Where is my umbrella?" "The toolshed is in the back"; "What is behind this behavior?"
be