Comparing face outlines in a drawing exercise

Ethanmene

While preparing a glossary for new illustrators, I ran into a disagreement about how to explain the basic face outline categories. Some entries offer only a category name, while others mix several visible features into paragraphs that are difficult to compare. A reference about determining face shape might help us decide which observations belong in each entry. Perhaps each entry could start with the overall proportions, followed by a separate sentence about the jaw and forehead outline. Readers could then compare the entries using the same features instead of treating one striking detail as a complete definition. I think the glossary should acknowledge mixed features, with a short note allowing readers to describe an outline between categories. The accompanying drawings could share a scale and a plain outline, keeping hairstyle details from obscuring the features being discussed. The wording should stay descriptive and avoid implying that one category is preferable or that real features need to be corrected. Which details are essential in a beginner glossary, and which would you move into a separate explanation with more examples?