HTML <ADDRESS> Element
The HTML <address> tag defines contact information for the nearest <article> or <body> ancestor in the HTML document.
Many documents needed to contain a snail-mail address, and there is a special <address> element that is used to contain addresses. For example, here is the address for AnsMachine inside <address> element.
<address>Kathmandu Newbaneshwor, Nepal 46000 Bizulibazzar 24509</address>
Kathmandu Newbaneshwor, Nepal 46000 Bizulibazzar 24509
A browser can display the address differently than the surrounding document IE, Firefox, and Safari display it in italics form.
It is widely used in footer side to display address with contact details.
You can override the design format of <address> element with CSS.
HTML <ABBR> element for Abbreviations
You can indicate when you are using an abbreviated form by placing the abbreviation between opening <abbr> and closing </abbr> tags.
When possible, consider using a title attribute whose value is the full version of the abbreviations. For example, if you want to indicate that CPU is an abbreviation for Central Processing Unit, you can use the <abbr> element,
The most important part of the Computer is <abbr title="Central Processing Unit">CPU</abbr>
The most important part of the Computer is CPU