Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
riaghail
←
English
rule
(cognate)
←
Latin
rēgula
(derived)
←
Old Irish
[[ríagul]], [[ríagol]]
(inherited)