The Table cell HTML element (<td>) defines a cell of a table that contains data. It participates in the table model.
The HTML Table Head Element (<thead>) defines a set of rows defining the head of the columns of the table.
The HTML Variable Element (<var>) represents a variable in a mathematical expression or a programming context.
The HTML Small Element (<small>) makes the text font size one size smaller (for example, from large to medium, or from small to x-small) down to the browser's minimum font size.  In HTML5, this element is repurposed to represent side-comments and small print, including copyright and legal text, independent of its styled presentation.
The HTML Strong Element (<strong>) gives text strong importance, and is typically displayed in bold.