When to use like in English? What is the difference?

First look at the part-of-speech image.

1. Preposition means "like, similar".

2. Verbs mean "like" in the first person I we and in the second person you. They use like in the third person he she. It uses like to pay attention to the third person singular.

Nouns are used in some fixed phrases, such as one's likes and dislikes, likes and dislikes, and so on.

A hobby of [somebody]/[something]. Someone similar to someone.