汽油

汽 = 气 + 氵 : The Queen of Hearts (qi) conducts an experiment in the space station's bathroom (Ø4). She attached an empty balloon (气) to a water bottle (氵) and uses a lighter to make the water boil. Subsequently the water becomes water vapor (汽) and fills the balloon, enabling the queen to estimate the vapor volume.

油 = 氵 + 由 : Maud Younger (y) is creating art in the outhouse's kitchen (ou2). She is painting a picture using oil (油) paint and occasionally using water color stored in a water bottle (氵). She is nipping a cuba libre (由) and from time to time even using her drink as color for her picture.