Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
gním
←
Breton
niñv
(cognate)
←
Proto-Celtic
*gnīmus
(inherited)
←
Welsh
gnif
(cognate)
←
Proto-Indo-European
*ǵenh₁-
(root)
←
Proto-Indo-European
*ǵenh₁-
(derived)
→
Irish
gníomh
(inherited)
→
Irish
gníomhach
(mention)
→
Irish
foirgneamh
(mention)
→
Scottish Gaelic
gnìomh
(inherited)