A spreadsheet is a type of software program used on computers to arrange, examine, and work with data in a tabular manner. Each cell in the grid-like structure can hold text, numbers, formulas, or functions. Spreadsheets are frequently used for purposes including budgeting, data management, mathematical calculations, and financial analysis. 

Here are some of the key terms you can include in a spreadsheet:-

1. Sales Data : Keep track of your sales data, including the date of the sale, the good or service sold, the quantity, the price per unit, the total price, and the clientele.

2. Expenses : Create columns for the date, category (such as rent, utilities, or marketing), description, and amount spent to keep track of your outlays.

3. Budget : Create a budget sheet on which to record your anticiapted income and outgoing costs. Iclude sections for sources of income, fixed costs (like rent or loan payments), variable costs (like groceries or entertainment), and savings.

4. Inventory : Monitor your stock levels if your company sells tangible goods. Columns for the product's name, SKU, quantity, reorder point, supplier details, and cost per unit should be included.

5. Employee Information : Information on your employees, including name, contact info, position, start date, pay, and any other pertinent data, should be kept on file.

6. Project Tracker : Use a spreadsheet to keep track of the progress of the various tasks you are working on. Add columns for the project's name, beginning and ending dates, tasks or milestones, allocated team members, and status.

7. Client or Customer List : Maintain a database of your clients or customers that includes their names, contact information, company(if applicable), and any other relevent comments or information.

8. Time Tracking : If you charge clients according to the number of hours you work, make a sheet to record the time spent on various activities or projects. Add columns for the date, the project name, the task description, the start time, the end time, and the total number of hours spent.

9. Website Analytics : Track website analytics like page views, unique visitors, conversion rates, and other pertinent metrics if you run an online business or have a website, create columns for the date, the name of the measure, and the associated values.

10. Social media Metrics : Monitor important data like followers, engagement rates, clicks, and shares if you use social media for your business, include columns for the date, the social media platform, the name of the statistic, and the associated values.

Do not forget to adjust the spreadsheet to your unique needs and company needs. The data can be formated to make it more aesthetically pleasing and simpler to examine, as well as to add or delete columns as needed.