Are the words interesting and interested related or different

So they are related

Definitely!

interest + ing

and
interest + ed

present participle and simple past / past participle of the same verb

https://www.dictionary.com/browse/interest?s=t
Scroll down to read the verb meanings, forms, uses.

The words "interesting" and "interested" are related but have different meanings and uses.

The word "interesting" is an adjective that describes something or someone that is engaging, captivating, or intriguing. For example, if you find a movie enjoyable and thought-provoking, you can say, "The movie is interesting."

On the other hand, "interested" is also an adjective, but it describes someone's state of being engaged, attentive, or curious about something. It usually indicates a desire or willingness to become involved in or learn more about a particular subject. For instance, if you want to learn how to play the guitar and have a keen desire to acquire that skill, you can say, "I am interested in learning the guitar."

In summary, "interesting" refers to something that catches your attention or is fascinating, while "interested" indicates a personal inclination or desire to know more about a topic or engage in a particular activity.