How to save forms history but do not keep search history

Hello Is it possible to configure firefox in such a way that it remembers forms history on pages, but does not remember search history in firefox? I have classic search bar enabled and all things that I enter in address bar or search bar are remembered and suggested to me. I can disable saving forms history but it limits usability for webpages for me. Is it possible to change something in about:config that would enable me to remember forms on pages but forget forms built into firefox? Another annoying thing is fact that I have to clear both forms history and search history, I cannot separate it.