Usable tags to make a table:
<caption>: the title of the table
<thead>, <tbody>, <tfoot>: represent the table's head, body, and footer.

<tr>: defines a row in the table, like a "section"
<th>: a "header cell", usually used inside <thead> or <tfoot>
<td>: a regular cell, used inside <tbody>

colspan and rowspan: these are attributes for <th> or <td> tags. They allow cells to span multiple columns or rows.
Example: <td colspan="2"></td>

code :

<table> <caption>Fruit or Vegetable ?</caption> <tr> <th>name</th> <td>Carrot</td> <td>Apple</td> <td>Tomato</td> </tr> <tr> <th>Fruits</th> <td>No</td> <td>Yes</td> <td rawspan="2">It's a fruit, but it's often eaten like a vegetable</td> </tr> <tr> <th>Vegetable</th> <td>No</td> <td>Yes</td> </tr> </table>

Visual :

Fruit or Vegetable ?
name Carrot Apple Tomato
Fruits No Yes It's a fruit, but it's often eaten like a vegetable
Vegetable No Yes