rate

rate (http://definr.com/rate)

     n 1: amount of a charge or payment relative to some basis; "a
          10-minute phone call at that rate would cost $5" [syn: {charge
          per unit}]
     2: a magnitude or frequency relative to a time unit; "they
        traveled at a rate of 55 miles per hour"; "the rate of
        change was faster than expected"
     3: the relative speed of progress or change; "he lived at a
        fast pace"; "he works at a great rate"; "the pace of
        events accelerated" [syn: pace]
     v 1: assign a rank or rating to; "how would you rank these
          students?" [syn: rank, range, order, grade, place]
     2: be worthy of or have a certain rating [syn: deserve, merit]
     3: estimate the value of something [syn: value]