1. Ingredients: Martini is a cocktail based on vermouth and dry flavored brandy, while whisky is a spirit made from different malts, grains, or other ingredients.
2. The process of making: a martini is made by mixing different recipes for cocktails, while whisky is made by roasting malt and other ingredients over a charcoal fire and then aging them in wooden barrels.
3. Alcohol content: martinis are usually between 20 and 24 percent alcohol by volume, while whisky is usually more than 40 percent.
4. Drinking style: Martini is usually served as part of a cocktail or mixer, while whisky is usually served straight or mixed with other drinks.