Include directive is used to include  static contents
in tha jsp page.The content of item with include
directive will be added in the jsp page at the time of
translation of jsp page.There is no way to intimate
server that the included page is changed.

Include action is used to include dynamic contents in
the jsp page.Include action will be called at the time
of requesting the jsp page.The contents of the item
with include action will be invoked run time.