Column Charts are similar to bar charts, the only and main difference is the orientation of axes, labels and bars. While Bar Charts have categories along the vertical axis and the values along the horizontal one, Column Charts have their coordinate system the same as the most Basic Charts have: values on the vertical Y axis and arguments (categories) on the horizontal X axis (standard cartesian coordinate system). As well as Bar Charts, Column Charts are rather useful for showing data changes over a period of time or to illustrate the difference between several values.
This Column Chart is a simple example of how Columns Charts usually built. The chart shows the revenue in dollars top 10 cosmetic products brought to a company. No time period is specified here; the X axis holds categories, names of the products, the Y axis shows amount in dollars (values). The columns represent the revenue for each product; the tooltips of the only series formatted to show the dollar sign and to be shown above the columns. Interactivity hover mode is set to "byX" mode, so you don't need to hover column itself to see the tooltip.