oil; fat; grease; any of various liquid fats or hydrocarbons used as food, fuel, or lubricants

to apply tung oil, paint, or varnish to a surface

oily; greasy; (of food) heavy with fat

slick; cunning; untrustworthy and smooth in speech or behavior

to get oil or grease on something; to be stained by oil

(bound form) lush; exuberant; appearing as if dripping, as in 油然 yóu​rán

a Chinese surname

extra or additional profit; illicit gains; kickbacks

(of a color) deep and shiny; dark