Establish concept relationships

Next, build out the relationships between concepts. For a hierarchical taxonomy, this means defining the branches of your tree and deciding the parent-child relationships between concepts.

You need to decide how detailed each level should be. For example, if you’re creating a taxonomy for a library, "Books" might be a parent category. Under "Books," you could have "Fiction" and "Non-Fiction." Under "Fiction," you might have "Mystery," "Romance," and "Science Fiction." This shows how broad or narrow each category should be.

You also need to identify related concepts that aren’t synonyms. For example, "Books" and "E-Books" are related but not the same. You connect these with related-term relationships. This is crucial because it helps users find related content easily.