The answer to this is a row. If it is the vertical space that would need to be defined, that will be called column. Microsoft Excel is actually very useful for a lot of people. There are a lot of people who use it in order to create lists of things that they would do. Some use it in order to create the details that will be placed in charts and graphs.
Others are perfectly happy to use it for computations. The fact cannot be denied that this is one of the programs that can be used for a wide variety of purposes. You may find yourself wanting to use your Excel in different situations.