The most difficult language to learn is Basque, which is spoken in northwestern Spain and southwestern France. It is not related to any other language in the world, and has an extremely complicated word structure and vocabulary.
The Cambodian alphabet is the world's largest alphabet, with 74 letters. The world's shortest alphabet, used in the Solomon Islands, has only 11.
English, the second most spoken language in the world, has more words than any other language. But English speakers generally use only about 1% of the language.