The following are examples of grids and frames within the real world:

Blinds on a window.
The image of the blinds is most similar to a multicolumn grid.

The first image was taken of blinds that cover a window in my house. I took this image because it reminded me of a multicolumn grid, which is referenced in the book layout essentials: 100 design principles for using grids (Tondreau, 2009). Multicolumn grids are made up of vertical containers and can vary in height and width. The image of the blinds has varying width columns that are all the same height.

A chopping board found in my kitchen with text in a grid format.
A photo of Humber bridge.
The above two images are most similar to a hierarchical grid.

The first image is of a chopping board found in my kitchen that uses typography in a grid format. The second is an image of Humber bridge in which the centre of the bridge looks like a grid. Both these look similar to the hierarchical grid, which breaks the ‘page’ (or in this case bridge and chopping board) into zones and mostly consist of horizontal columns which are not always necessarily the same height.

The back of a bottle of fairy.
The image above is most similar to a modular grid.

The information shown on the back of the fairy washing detergent (especially that under number 3) is most comparable with a modular grid. Modular grids are more often used to give complex information, and they combine both horizontal and vertical columns.

Image of a photo frame in my living room.
The image in the photo frame looks most like a single column grid.

The image in the photo frame looks most like a single column grid. This is a grid that contains only one column and most commonly contains large amounts of information that the designer wants to showcase on the page.