Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Romanian acru
Proto-Indo-European *h₂ḱrós (derived)
Proto-Italic *akris (inherited)
Latin (mention)
Latin ācer (inherited)
Latin (mention)

Spanish agrio (cognate)
Romanian acri (mention)
Romanian acrișor (suffix)
Romanian acrime (suffix)
Romanian acriș (suffix)
Romanian acruț (suffix)
Romanian acriu (suffix)
Romanian Acru (mention)