Pneumonoultramicroscopicsilicovolcanoconiosis
My favorite word
&
Lopadotemakhoselakhogaleokranioleipsanodrimhypotrimmatosilphiokarabomelitokatakekhymenokikhlepikossyphophattoperisteralektryonoptokephalliokigklopeleiolagōiosiraiobaphētraganopterýgōn
My 2nd favorite word
The 1st word is a lung disease caused by the inhalation of very fine silica dust, causing inflammation in the lungs.
And the second word is a dish compounded of all kinds of dainties, fish, flesh, fowl, and sauces.