Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
жестокий
←
Old East Slavic
жестокъ
(inherited)
←
Old East Slavic
жестъкъ
(mention)
←
Russian
жёсткий
(mention)