Morphology is the study of the structure and form of words in a language. It examines how words are built from smaller units called morphemes, which are the smallest meaningful parts of a word. For example, in the word unhappiness, the prefix un- and the root happy combine with the suffix -ness to create a new meaning. In addition to words, morphology can also refer to the physical structure of living organisms. In biology, it looks at the shape, size, and arrangement of parts in plants and animals. For instance, the morphology of a flower can reveal important information about its species and how it interacts with its environment.