Here's how it works:
1. Genus: The general category or group the term belongs to. For example, "A dog is..."
2. Differentia: The specific characteristics that distinguish the term from other members of the category. "...a domesticated canine animal..."
Example:
* Definition: A dog is a domesticated canine animal.
* Genus: Domesticated canine animal
* Differentia: The specific characteristic that makes it a "dog" rather than other canine animals (like wolves) is that it's domesticated.
By providing the genus first, you create a framework for understanding the term. The differentia then clarifies the specific nature of the term within that category.