On the periodic table, what is a vertical column of elements called?

1. Elements were arranged so that similar properties fall into the same vertical column. 2. A group is a column on the periodic table containing elements with similar properties. 3. A period is the horizontal row, so the two words must not be swapped. _Source: Siyavula Physical Sciences Grade 10 (Everything Science, CC BY 4.0), Chapter 5: The periodic table_