Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Scottish Gaelic tro
← Proto-Celtic *trimo- (inherited)
← Proto-Celtic *trē (mention)
← Proto-Indo-European *terh₂- (inherited)
← Old Irish tremi (inherited)
← Old Irish tre (mention)

→ Scottish Gaelic tron (mention)
→ Scottish Gaelic tromham (mention)
→ Scottish Gaelic tromhad (mention)
→ Scottish Gaelic tromhaibh (mention)
→ Scottish Gaelic troimhe (mention)
→ Scottish Gaelic troimhpe (mention)
→ Scottish Gaelic tromhainn (mention)
→ Scottish Gaelic tromhpa (mention)
→ Scottish Gaelic gaoth tro tholl (compound)