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.