Just One Letter Off
Here are a few examples from the book. Many uncommon words are just one letter off some very common words:
SHALLOW SHALLOP
CAMPING CAMPONG
CAMERAS CAMERAL
BEDLAMP BEDLAMS
NOTATION DOTATION
CARRYON CARRION
MOTIONS MORIONS
COMPANY COMPONY
LOTIONS LOGIONS
NATIONS NASIONS
HAZINGS HAYINGS