Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Japanese
楽天
→
Japanese
楽天家
(suffix)
→
Japanese
楽天主義
(affix)
→
Japanese
楽天的
(suffix)
→
Japanese
楽天観
(compound)