Tables are essential for displaying data in a way that is easy to understand and compare. Semantic HTML provides specific elements to structure tabular data, making it accessible and meaningful. The main elements are table, caption, thead, tbody, tfoot, tr, th, and td.

Each of these elements has a specific role:

• table defines the table itself;
• caption provides a concise description of the table's contents;
• thead, tbody, and tfoot organize rows into logical sections.

The thead element groups header rows, usually containing column headings within th cells. The tbody element wraps the main body of data rows, each made up of td cells. Using these elements not only improves readability for users but also helps screen readers and search engines interpret the data correctly.