Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latgalian
mārga
←
Lithuanian
merga
(cognate)
←
Lithuanian
mergina
(mention)
←
Latvian
mērga
(cognate)
←
Old Prussian
mergo
(cognate)