What are the differences between HTML and XML?

Answer:

• HTML uses predefined element names, such as &ltp, &ltbr, &gt, <p> and <br>. In XML, you create your own element names to identify hierarchical nodes of data.

• XML syntax is much stricter than HTML: such as elements must always have end-tags, element names are case sensitive, attribute values must always be enclosed in quotation marks, and nested elements must be terminated within their parent elements.

• XML identifies data conceptually based on the data content, rather than based on the type of formatting to apply but in HTML it identifies the data based on the formatting.