contention (n.)

late 14c., contencioun, "strife, dissension, quarreling," from Old French contencion and directly from Latin contentionem (nominative contentio) "a vigorous struggling, a contest, a fight," noun of action from past-participle stem of contendere (see contend). Meaning "a violent effort to obtain something" is from 1570s; meaning "that which is contended for" is from 1630s.