慄く[ononoku] to shake (from fear, cold, excitement, etc.)
戦慄[senritsu] shudder
戦慄く[wananaku] to tremble

慄然[ritsuzen] terrified
慄烈[ritsuretsu] stinging cold
戦戦慄慄[sensenritsuritsu] trembling with fear

ガリア戦記[gariasenki] History of the Gallic Wars
ゲリラ戦[gerirasen] guerrilla warfare
セールス戦略[seerususenryaku] sales strategy
ベトナム戦争[betonamusensou] Vietnam war
マーケティング戦略[maaketingusenryaku] marketing strategy

悪戦[akusen] hard fighting
悪戦苦闘[akusenkutou] hard fighting
一回戦[ikkaisen] first game
一戦[issen] battle
厭戦[ensen] war weariness