That apparently depends upon your definition of word. I will give you two interesting examples. The longest word in any English dictionary is pneumonoultramicroscopicsilicovolcanoconiosis which is a lung disease you get from inhaling small particles from a volcano. The longest place name in the United States is Chargoggagoggmanchauggagoggchaubunagungamaugg. That very long word is a lake in Webster, Massachuesets. Wouldn’t you like to live on that lake?