What is the definition of web-design anyhow?

A website on which are placed the personal or nonprofit or commercial interests of its owner.
They differ in every each case(or we could all be using joomla or the likes)

A sculptor needs a portfolio-make a great graphics site(xwd)
A school needs a site which handles rosters and personal info(use php/asp based website with database like joomla)
A consultant needs more forms so xwd(lacks forms) is not that suitable nor is joomla(to heavy)

So choose what's needed in every single case.
Like stated before think complementary

Hans