Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
Luanistyn
←
Irish
Lúnasa
(cognate)
←
Scottish Gaelic
Lùnastal
(cognate)
←
Old Irish
Lugnasad
(inherited)