1. Composition: Stool is primarily composed of water, bacteria, undigested food particles, cells shed from the lining of the intestines, and waste products that are not absorbed by the body.

2. Color: The color of stool can vary widely depending on factors such as diet, medications, and overall health. Normal stool colors range from brown to green to yellow.

3. Odor: The characteristic odor of stool is due to the presence of bacteria in the intestines that break down food particles. The specific odor can vary from person to person and is influenced by diet.

4. Texture: Stool can have various textures, from soft and formed to loose and watery. The texture can be influenced by factors like fiber intake and hydration.

5. Frequency: Normal bowel movement frequency varies from person to person, but it generally ranges from three times a day to three times a week. What's most important is regularity for each individual.

6. Digestive Process: Stool is the end product of the digestive process. After food is broken down and nutrients are absorbed in the small intestine, the remaining waste material is compacted in the colon and eventually eliminated as stool.

7. Fiber's Role: Dietary fiber plays a crucial role in stool formation and regular bowel movements. It adds bulk to the stool, making it easier to pass.

9. Bristol Stool Scale: The Bristol Stool Scale is a commonly used tool to categorize stool into seven different types, helping individuals and healthcare professionals assess stool consistency and potential digestive issues.