old

Old is a word we use to describe something that has been around for a long time. It can be used to describe people, animals, objects, or even ideas.

When we say that something is old, we are usually comparing it to something else that is newer. For example, a tree that is 100 years old is considered old compared to a tree that is 10 years old. But the 100-year-old tree would be considered young compared to a mountain that is millions of years old.

There is no one answer to the question of how old something has to be to be considered old. It depends on the context. For example, a 10-year-old car might be considered old, but a 100-year-old book might not be.

Old things can be valuable, such as antiques and artifacts.