Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
stéig
←
Scottish Gaelic
staoig
(cognate)
←
Middle Irish
staíc
(inherited)
←
Old Norse
steik
(derived)
→
Scottish Gaelic
staoig
(cognate)