Only echo Page Content (not page title & page content together)

You can make use of the_page_content() outside the loop to display only the content of the page where the_page_content() is supported by the following function

function the_page_content() {
    global $post;

    $content="";
    if ( is_page() ) {
        $content .= apply_filters( 'the_content', $post->post_content );
    }
    echo $content;
}

Inside the loop you can just use the_content();