Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
eo
ā
Welsh
eog
(cognate)
ā
Old Irish
eĆ³
(inherited)
ā
Middle Welsh
ehawc
(cognate)