Strong is used to indicate strong importance.

This text has added emphasis.

The b element is stylistically different text from normal text, without any special importance.

The i element is text that is offset from the normal text.

The u element is text with an unarticulated, though explicitly rendered, non-textual annotation.

This text is deleted and This text is inserted.

This text has a strikethrough.

Superscript®.

Subscript for things like H2O.

`Code Tag for inline code`

This small text is small for for fine print, etc.

Abbreviation: The ACME Corporation is a fictional corporation that features prominently in the Road Runner/Wile E. Coyote cartoons as a running gag featuring outlandish products that fail or backfire catastrophically at the worst possible times. The name is also used as a generic title in many cartoons, films, TV series, commercials and comic strips.

This text is a short inline quotation.

This is a citation.

The dfn element indicates a definition.

The mark element indicates a highlight.

The variable element, such as x = y.