[Solved] I run the following code and expect to get all the words from the link below in a list without repeating any word. How determine if a word is unique?

I run the following code and expect to get all the words from the link below in a list without repeating any word. How determine if a word is unique?

solved I run the following code and expect to get all the words from the link below in a list without repeating any word. How determine if a word is unique?