Common names are often used to refer to organic compounds. These names are not systematic and are based on historical or traditional usage. Here are some examples of common names of organic compounds:

1. Ethyl alcohol - also known as ethanol, this compound is commonly found in alcoholic beverages and is used as a solvent and fuel.

2. Acetic acid - also known as vinegar, acetic acid is used as a preservative and flavoring agent in food.

3. Formaldehyde - this compound is used in the production of plastics, textiles, and other materials.

4. Methane - this is the primary component of natural gas and is used as a fuel.

5. Sucrose - also known as table sugar, sucrose is a common sweetener used in food and beverages.

6. Benzene - this compound is used in the production of plastics, rubber, and other materials.

7. Aspirin - this compound is used as a pain reliever and anti-inflammatory medication.

8. Citric acid - this compound is found in citrus fruits and is used as a flavoring agent and preservative in food.

9. Urea - this compound is used as a fertilizer and in the production of plastics and other materials.

10. Lactic acid - this compound is produced during exercise and is used in the production of cheese, yogurt, and other dairy products.

Explanation:

Common names of organic compounds are based on traditional or historical usage rather than a systematic naming convention. These names are often easier to remember and recognize than systematic names, but they can also be ambiguous or confusing. Systematic names, on the other hand, provide a clear and unambiguous way to describe the structure of a compound. However, they can be more difficult to remember and may not be as widely recognized as common names. It is important to note that while common names may be familiar and widely used, they do not provide any information about the structure or properties of a compound. Therefore, it is important to be familiar with both common and systematic names of organic compounds.