The 'Search' and 'Smart Search' components have coexisted since Joomla 2.5.
com_search) would provide a straightforward search feature while Smart Search would offer indexing and more advanced search capabilities with filtering.
Smart Search (or com_finder if you look for it in the Joomla repository) has been greatly improved in Joomla 4. More streamlined, more performant, more 'modern'. Find out how you can transition from one to the other on your site.
Search has not been...
Read more: Transition your Joomla 4 website from Search to Smart Search Go on author website