Sign language grammar differs from spoken language grammar — word order and facial expression serve different grammatical roles.

The longest word in English, pneumonoultramicroscopicsilicovolcanoconiosis, was invented to be the longest word.

Shakespeare's works have been translated into over 100 languages and are performed more than any other playwright.

Sign languages are complete natural languages — they are not universal and vary by country.

The word 'set' has the most definitions in the English language — over 430 in some dictionaries.

Machu Picchu was never discovered by Spanish conquistadors — it was abandoned around 1572 and remained unknown to the outside world until 1911.

The word 'OK' may be the most recognized word in the world — understood in virtually every language.

The Hawaiian alphabet has only 13 letters — 5 vowels and 8 consonants.

The Sumerian language, one of the earliest written, died as a spoken language around 2000 BC but continued as a liturgical language for centuries.