Entomology is the branch of zoology specifically dedicated to the study of insects. Entomologists research many aspects of insects, including:

* Taxonomy: This involves classifying insects, giving them scientific names, and grouping them into different categories based on their characteristics. This is the process of naming and grouping you were asking about.

* Ecology: How insects interact with their environment and other organisms.

* Physiology: How insects function internally, including their anatomy, metabolism, and behavior.

* Evolution: How insects have changed over time and their relationships to other insects.

* Pest management: How to control insect populations that are harmful to crops, livestock, or humans.

So, while "entomologist" encompasses a wide range of insect research, it also includes the specific area of classifying and naming insects, which is a key part of their work.