In blogging, these are known as Tags and Categories.
In our messy room, these are our furniture: the table is for studying, the bookshelf is for books, the closet is for clothes.
In Pinterest, they are organized by keywords. We search items based on nouns and pictures relating to the noun are shown.
Chunking helps us remember things better because we put a category on it, then we file that category as a file folder, in our brains.
At the office, when we need to find information from a certain project, we physically look for its file folder. On the internet, when we search Pinterest for pictures, we also use Search.
Same for the human brain, when we are looking for information, we look for its file folder, its category, then we access the information stored in the category.
