Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Prussian
mergo
→
Lithuanian
marti
(cognate)
→
Latgalian
mārga
(cognate)
→
Albanian
mërkosh
(cognate)