liquid Liquid fat.
petroleum Petroleum-based liquid used as fuel or lubricant. (quote-magazine)
An oil painting.
1973, John Ulric Nef, Search for meaning: the autobiography of a nonconformist (page 89)
Yet, in another way, I was unable to put Picasso's oils in the same class as Cezanne's, or even (which will no doubt shock many readers) as Renoir's.