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: persea americana
The avocado is the fruit of a tree native to south and central America. It prefers to grow in tropical areas.
Avocados are much higher in fat than other fruits. The avocado has a big seed inside it, and a hard skin, so you can only eat the soft flesh in between. Their flesh is yellow to green, and has a texture that is a little like butter, hence one of their common names of "butter fruit". The flesh of the avocado can be spread on bread or crackers, or the flesh can be diced and used as an ingredient in salads.