Read more books on this subject and you will understand. It will be helpful to read more books from Hong Kong in the library. Their books will show that these things are easy to understand.

The relationship between options and futures is similar to that between futures and commodities; But there are also some differences, such as the buyer can exercise or give up the option when it expires, and the futures must be closed or delivered when it expires. So if you study, you can start from this aspect and compare the relationship between options and futures, futures and commodities.

As for the classification of call options and put options, first define them clearly, then find a few examples, or contact them more, and you will understand.