Two hand-drawn images. On the left, Big Bird tickles Cookie Monster. On the right, Cookie Monster tickles Big Bird.

How Do We Combine Words to Express Complex Ideas? Linguistic Compositionality

Language is compositional: we systematically combine smaller language units—words into phrases, and phrases into sentences—to form more complex ideas. The meaning of each sentence depends on the meanings of its words and how we put them together. Consider the example, “John hugs Mary.”  Each word has a specific meaning: “John” refers to one person, “Mary” […]