Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Latin -trum
← Proto-Indo-European *-trom (inherited)
← Proto-Italic *-trom (inherited)

→ English rostrum (mention)
→ Latin monstrum (suffix)
→ Latin plectrum (affix)
→ Latin culter (mention)
→ Latin -tor (cognate)
→ Latin calamistrum (mention)
→ Latin mollestra (affix)