Columns can be a useful tool to know when making a pattern. It may be tempting to put information side by side using tabs or tables but this usually isn't the best way to go about putting information together like that. For starters, if you have multiple lines of text you're putting into columns without using the column tool, then screen readers will still read each line from left to right, not understanding how its meant to be read. If it's in a table then the table will be a layout table, which, as a reminder, layout tables are improper tables and not accessible.
Making a column in word is done by going to the Layout tab and selecting Columns. This button will open a drop down list where you can choose between 1 to 3 columns for your pattern. As well theres a left and right option which creates two columns with an uneven width, left making the left side a smaller column, right making the right side a smaller column.
Creating columns in a Google Doc is done by going to the format tab which brings up a drown down menu where you can find columns. Under columns opens another menu with the option for one to three columns.