The reason we have two words nowadays instead of one is because one of the words is a word that the system just got out of a book, it didn't know what it was and it's going to present it to you.
A důvod proč používáme 2 slova místo jednoho je ten, protože jedno z těch slov je slovo, které systém dostal z knihy, a neví co to to je a ukáže vám ho.