The word 'typewriter' is one of the longest words you can type using only the top row of a QWERTY keyboard.

The word 'muscle' comes from Latin 'musculus' meaning little mouse — the movement of muscles under skin resembled a mouse moving.

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

Sign languages are full natural languages with their own grammar and syntax, not just manual versions of spoken language.

The word 'set' has the most definitions in the English language — over 430 in the Oxford English Dictionary.

The Oxford comma (serial comma) prevents ambiguity — its omission once led to a $5 million court settlement.

There are approximately 7,000 languages spoken in the world — about half are expected to disappear by end of the century.

Sign languages are complete, natural languages with their own grammar — they are not universal and vary by country.

There are no true synonyms — words with similar meanings always differ in connotation, register, or use.