Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
112
The word "impossible" dropped in use by 50% over the course of the 20th century
5
Floccinaucinihilipilification, the declaration of an item being useless, is the longest non-medical term in the English language.
125
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634
A group of ferrets is called a business.
6