<acronym> tag in HTML
The <acronym> tag is used to denote an acronym (an abbreviation which can be pronounced as a word).
The <acronym> tag is used for language translation in search-engines, also it is used for internal purpose.
To show the difference we can use title attribute.
Instead of <acronym> tag, we recommend to use <abbr> tag.
This tag is not supported by HTML5.