Here are the matched definitions with the corresponding terms:
- Sidestream smoke - Smoke that comes from the burning end of a cigarette, cigar, or pipe.
- Stimulant - A substance that increases physiological or nervous activity in the body.
- Smokeless tobacco - Tobacco products that are not burned, such as chewing tobacco or snuff.
- Secondhand smoke - Smoke inhaled by non-smokers from the environment where tobacco is being smoked.
- Nicotine - The primary addictive substance found in tobacco.
- Carcinogen - A substance capable of causing cancer in living tissue.
- Tar - A thick, sticky substance produced when tobacco is burned; it collects in the lungs of smokers.
- Mainstream smoke - Smoke that is inhaled and exhaled by a smoker.
- Addictive drug - A substance that causes physical or psychological dependence.
You can match these terms with your definitions based on this information. Let me know if you need further assistance!