Suffix attached to nouns to form names of wars or battles, e.g., 太平洋戦争 (Pacific War).
World War II ended in 1945.
The Battle of Sekigahara changed Japanese history.
Suffix used in sports or competitive contexts to name a match or contest, e.g., 優勝決定戦 (championship match).
Tonight there is a Japan versus Brazil match.
The final match will be held tomorrow.
war · fierce competition; struggle; fighting
tactics; strategy; plan · military operation; naval operation
challenge; attempt; defiance
battle; combat; fight
strategy; tactics
participation in a war; going to war; entering a conflict · taking part in a competition; entering a contest; joining a race
soldier; warrior; combatant
match; game; battle; competition
postwar period; after the war
great war; great battle · world war
tank; armored fighting vehicle · chariot
battlefield; battleground
pre-war; before the war
watching a game; spectating; observing military operations
tactics; tactical
war potential; military strength; fighting power · competitive ability; capabilities; valuable asset
battleship
battle; fight; military engagement · contest; competitive fight; battle for something
event with ... rounds/innings/legs · nth-round match
squadron; corps; team
defeat; lost battle; losing a war
decisive battle; deciding match; play-off
wartime
war chronicle; military history; record of war
end of war; cessation of hostilities
front; battlefront; war front
hard fight; struggle; close game
cold war; the Cold War
death in battle; killed in action
first match; opening game; first round
The kanji 戦 means 'war' or 'battle'. As a suffix, it derives from its use in compound words to denote conflicts or contests.