HTML Entities
HTML Entities are used for denoting reserved characters in the language.
Reserved characters
Like programming languages which have reserved words and operators, HTML has reserved characters . If you want to
use text in html formed using such characters , you need special ways of denoting it, else it will be confused as a character which is part of html syntax and hence will take a different meaning.
In above example we find characters <,> and / apart from alphanumeric characters.
In order to use a reserved character as text in HTML, you need to use an appropriate HTML character entity.
Following are some character entities:
< less-than sign -> < or <
> greater-than sign -> > or >
≤ less-than or equals sign -> &le
≥ greater-than or equals sign -> &ge
  (non breaking space , means space on same line, if 2 words are separated by this they will always remain together on same line)
& ampersand -> & or &
" double quotation mark -> " or "
' single quotation mark (apostrophe) -> &apos or '
¢ cent -> ¢ or ¢
£ pound -> £ or £
¥ yen -> ¥ or ¥
€ euro -> &euro or €
© copyright -> © or ©
® registered trademark -> ® or ®