Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
aoghaire
←
Proto-Celtic
*owis
(inherited)
←
Ancient Greek
[[ἀγείρω]], [[ἀγορά]]
(cognate)
←
Proto-Indo-European
*h₂ger-
(inherited)
←
Middle Irish
aegaire
(inherited)
←
Old Irish
augaire
(inherited)
←
Old Irish
oí
(cognate)