A place of confrontation.
A barrier constructed across a road, especially as a military defence
An obstacle, barrier, or bulwark.
to close or block a road etc., using a barricade
to keep someone in (or out), using a blockade, especially ships in a port
Conflict, as between persons having dissimilar ideas or interests; clash.
The rubbing of one object or surface against another.
A force that resists the relative motion or tendency to such motion of two bodies in contact.
(Second Sino-Japanese War) Conflict, as between the Communists and non-Hanjian Kuomintang forces.