Synonyms: fight, battle, war, conflict
fight: an occasion on which people try to hurt each other or knock each other down
Example: He got into a fight with boys who were bigger than him. Fights broke out between the protesters and the police.
battle: an occasion when large groups of soldiers fight each other using powerful weapons
Example: Many soldiers died in the first battle of the war. the Battle of Hastings
war: a period of fighting between countries
Example: Millions of soldiers and civilians were killed during the war.
conflict: a war, or fighting as part of a war
Example: the violent conflict between the neighbouring republics
Example: The government is engaged in armed conflict with rebel forces.