Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Prussian
moasis
←
Proto-Indo-European
*móysos
(derived)
→
Lithuanian
maišas
(cognate)
→
Latvian
maiss
(cognate)