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

→ English trough (inherited)
→ Old English trig (mention)
→ Old English treg (mention)
→ Westrobothnian trag (inherited)
→ Dutch trog (inherited)
→ Old Norse trog (inherited)
→ Vilamovian trȫk (inherited)