tobacco
[C/U] Both
This term carries a heavy medical and social weight, often evoking images of addiction, health warnings, and stale odors. It is typically used in technical or commercial contexts when referring to the raw crop, while in social settings, it frequently serves as a collective term for the habit of smoking. While related words like nicotine focus on the chemical stimulant, tobacco refers to the physical organic matter. It is often associated with a sense of antiquity or rural tradition in some cultures, contrasted with the modern clinical view of it as a carcinogen.
Uncountable when referring to the substance in general or the crop as a mass. Countable when referring to specific types or varieties of the plant.