Synonyms: rubbing, friction, detrition
Definition: effort expended in moving one object over another with pressure
Similar words: effort, elbow grease, travail, sweat, exertion
Definition: use of physical or mental energy; hard work
Usage: he got an A for effort; they managed only with great exertion
Definition: the resistance encountered when one body is moved in contact with another
Similar words: resistance
Definition: any mechanical force that tends to retard or oppose motion
Definition: a state of conflict between persons
Similar words: conflict
Definition: a state of opposition between persons or ideas or interests
Usage: his conflict of interest made him ineligible for the post; a conflict of loyalties