旋律【せんりつ】
melody, tune
螺旋【らせん】
spiral, helix, screw
斡旋【あっせん】
good offices, kind offices, services, influence, recommendation, mediation, intercession, conciliation, acting as a go-between
旋回【せんかい】
revolution, rotation, turning, circling, swiveling, turning (an aircraft or ship)
旋風【せんぷう】
whirlwind, sensation, commotion, hullabaloo
凱旋【がいせん】
triumphant return, returning in triumph
旋盤【せんばん】
lathe