Get unique words out of an array?

[N_H]

I used this guide to create my current setup.

I am trying to take get a list of words that are unique across the “sentences” column as the “Word array Rollup).”

So currently “Sentences” under the “Calc” sheet is taking values from “Sentences” on the “Sentences and words” sheet. The rollup “@WordArray” then creates an array from the values in that linked list. Finally, back on the first sheet I want to take unique words from the rollup “@WordArray” on the “calc” sheet. However, currently I am getting whole sentences.