· a state of conflict between persons
Synonym(s): clash
Hypernym(s): conflict
· the resistance encountered when one body is moved in contact with another
Synonym(s): rubbing
Hypernym(s): resistance
· effort expended in moving one object over another with pressure
Synonym(s): detrition, rubbing
Hypernym(s): effort, elbow_grease, exertion, travail, sweat