Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
togh
←
Proto-Celtic
*toguseti
(inherited)
←
Scottish Gaelic
tagh
(cognate)
←
Proto-Indo-European
*ǵews-
(root)
←
Proto-Indo-European
*ǵews-
(derived)
←
Middle Irish
togaid
(inherited)
←
Old Irish
do·goa
(inherited)
→
Scottish Gaelic
tagh
(cognate)
→
Norwegian Nynorsk
kjosa
(cognate)