English can be confusing. A lot of words are similar but with different meanings. It is almost impossible to avoid making mistakes in English, but you might be able to avoid making these ones.
bored vs boring
bored is an adjective that describes when someone feels tired and unhappy because something is not interesting or because they have nothing to do.
For example: She was so bored that she fell asleep.
boring is an adjective that means something is not interesting or exciting.
For example: The lesson was so boring that she fell asleep.