Asia is the world's largest continent both by area and population. It holds around 60% of the world's population.
Scientific name: asparagus officinalis
The asparagus spears that you buy in the shops are the new shoots of a type of plant. They are eaten as a vegetable, and can be cooked in a variety of ways. They are usually eaten alone as a side dish rather than mixed into something else like a stew.
Scientific name: acetylsalicylic acid
Aspirin is a drug that was originally made from willow bark. It is a commonly used painkiller for mild pain. It also thins the blood slightly and can be used to help people who get blood clots, but conversely might cause excessive bleeding and it is not recommended to take aspirin before you have surgery.