Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Old Norse -igr
English -y (cognate)
Proto-Germanic *-īgaz (inherited)
Proto-Germanic *-gaz (mention)
Proto-Indo-European *-kos (derived)
Latin -cus (cognate)

Icelandic blóðugur (mention)
Norwegian Bokmål -ig (inherited)
Norwegian Bokmål abbedverdighet (inherited)
Old Norse ástigr (suffix)
Swedish -ig (mention)
Swedish velig (mention)