In row 1 of the following spreadsheet, the words rank, name, population, and county are called what?

The words "rank," "name," "population," and "county" in row 1 of a spreadsheet are referred to as "headers" or "column headers." They serve as labels for the data contained in each respective column beneath them.

Headers are essential for understanding the content of each column, enabling users to interpret the data effectively. They provide context and clarity, making it easier to navigate, analyze, and manipulate the dataset. In this case, each header describes the type of information that is housed in that column: "rank" indicates the order or position in a list, "name" refers to the entities being ranked, "population" provides a quantitative measure of the count of individuals within a specific area, and "county" denotes the geographical area in question. Properly defined headers contribute to better data comprehension and usability in spreadsheets.