When a word or phrase is treated as an object within another expression.
Examples
A lady's "verily" is as potent as a lord's.
Shakespeare, The Winter's Tale 1.1.50-51 Their drink is sour: they have committed whoredom continually: her rulers with shame do love, "Give ye." —Hosea 4:19 I don't want to hear another "I'll do it later." Do it now.