How to replace/hide page title on front-end

Hi, i’d like to know if it’s possible (i am sure it is and it must be easy but i can’t figure it out) to hide the page title only on a certain page. I mean to hide the <h1> or <h2> tag that contains the page title, not <title> of the html page.

i tried with:

add_filter("the_title", "hide_title");

function hide_title($title ){
    global $post;

    //5 is the id of the page where i want to hide/replace the title
    if ($post->ID == 5) {
        $title = 'Replaced title';
    }
    return $title;
}

but it affects all my menu titles (in the nav). They are ‘Replaced title’ and i have no way to replace the title of a single page.
Also, i want to keep the original nav titles, just want to change the title inside a page. Any help or hints?
thanks in advance!