Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English ratio
English ration (doublet)
Proto-Indo-European *h₂er- (root)
Latin ratio (borrowed)

English ratiometric (suffix)
English ratioed (suffix)
English cross-ratio (affix)
English ratioless (suffix)
English ratiometer (compound)
English ratiometry (suffix)
English eigenratio (prefix)
English subratio (prefix)
English ratiuncule (mention)
Spanish razón (mention)
Spanish ración (mention)
Hawaiian lākiō (borrowed)
Japanese コストパフォーマンス (mention)
Portuguese rácio (borrowed)