Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English ruth
English rue (suffix)
English th (suffix)
Middle English reuþe (inherited)
Middle English ruthe (mention)
Middle English reuthe (mention)
Middle English rewthe (mention)
Middle English reowthe (mention)
Old Norse hrygð (mention)
Old Norse hryggð (mention)

English rue (link)
English -th (mention)
English ruthless (suffix)
English ruthful (suffix)