cigar : 指雪茄烟。
- an after-dinner cigar and brandy
- He was sitting alone smoking a big cigar.
cigarette : 指纸烟。
- a packet of cigarettes
- She lit a cigarette.
tobacco : 指烟草，烟叶、烟丝。
- 28 percent of people thought that the advertising of tobacco (= tobacco and products made from it, such as cigarettes) and alcohol should be banned.
- The government imposed a ban on tobacco advertising (= the advertising of cigarettes and all other forms of tobacco ).