interact と communicate はどう違いますか？説明が難しい場合は、例文を教えて下さい。

Interact means you are doing an action to people, things, and objects. If you pet a cat, you have just interacted with a cat.

"But how do I interact with a snail?"

Communicate is the sharing and exchanging of information. Writing and speaking to someone are ways to communicate.

"We can communicate by sending letters to each other."