节油

节油	jié yóu	to economize on gasoline / fuel-efficient
节	jiē	see 节骨眼
节	jié	joint; node / (bound form) section; segment / solar term (one of the 24 divisions of the year in the traditional Chinese calendar) / seasonal festival / (bound form) to economize; to save / (bound form) moral integrity; chastity / classifier for segments: lessons, train wagons, biblical verses etc / knot (nautical miles per hour)
油	yóu	oil / fat / grease / petroleum / to apply tung oil, paint or varnish / oily / greasy / glib / cunning