Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Proto-West Germanic *erþu

English earth (inherited)
Old English eorþe (inherited)
Cimbrian èerda (inherited)
German Erde (inherited)
Old High German erda (inherited)
Dutch aarde (inherited)
Old Dutch ertha (inherited)
Old Frisian erthe (inherited)
Old Saxon ertha (inherited)
Yiddish ערד (inherited)
Yola erth (inherited)