This document discusses two methods of developing a topic: definition and defining a term. Definition involves analyzing a word or expression by exploring its different aspects, associated concepts, and examples. There are two important concepts in defining - denotation and connotation. Denotation refers to the primary dictionary meaning of a word, while connotation refers to secondary meanings based on personal experience rather than dictionaries. Defining a term involves stating the term, the category or "genus" it belongs to, and distinguishing factors or "differentia." An example is provided of defining the term "gene" by stating its function in living cells and inheritance.