Search is usually performed by entering a search phrase in an input field and hit enter (or clicking the search button). You could use some advanced features in a search input box, such as is:question
on *.SE.
Advanced search uses a lot more filtering options such as date, size, location, region and other types of metadata to filter the search result to increase the good search results. It is very different from plain search.
Most search engines have advanced search even if it's not all that obvious to find.
I would suggest not to have advanced search a synonym for search because they are two different things.
closed
andvotes
which are still available in the regular search and only labelled as "advanced."