The <table> is a table tag.
An HTML table consists of the <table> element and one or more <tr>, <th> and <td>elements.
<th> - is a table header.
<tr> - is a table row.
<td> - is a table cell.

A more complex HTML table may also include:

<caption> - defines a table caption
<col> - defines column properties for each column within a <colgroup> element.
<colgroup> - specifies a group of one or more columns in a table for formatting.
<thead> - is used to group header content in an HTML table
<tfoot> - is used to group footer content in an HTML table.
<tbody> - is used to group the body content in an HTML table.

Note:
Tables should not be used for page layout!
Use CSS instead.