You will find seven meanings outlined in OED's entry to the phrase greatest, considered one of which is labelled out of date. See ‘This means & use’ for definitions, usage, and quotation evidence. The Greatest Songs of All Time carry with each other the preferred songs of all time from https://beckettgxmyl.post-blogs.com/56866210/the-single-best-strategy-to-use-for-what-is-the-greatest-song-ever-written