The folders with black text labels contain nouns that exist in the 300 Frequent Words we used for vocabulary selection and they link to pages that demonstrate the most popular words within each folder.

The folders with greyed-out labels don't contain any nouns from the top 300 words, and it is not intended to create pages for them here.

There's room for plenty more words in all of these folders, and the Overlay has 28 empty cells for the user to customise with more categories of words.

The words that label all these folders of nouns, are found as messages in the Name folder.