This site ranks 86,800 most commonly used English-language words. This is how the site describes itself:
WordCount™ is an artistic experiment in the way we use language. It presents the 86,800 most frequently used English words, ranked in order of commonality. Each word is scaled to reflect its frequency relative to the words that precede and follow it, giving a visual barometer of relevance. The larger the word, the more we use it. The smaller the word, the more uncommon it is.
WordCount was designed with a minimalist aesthetic, to let the information speak for itself. The interface is clean, basic and intuitive. The goal is for the user to feel embedded in the language, sifting through words like an archaeologist through sand, awaiting the unexpected find.