Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
scél
←
Proto-Celtic
*skʷetlom
(inherited)
←
Proto-Indo-European
*sekʷ-
(root)
←
Proto-Indo-European
*sekʷ-
(derived)
→
Welsh
chwedl
(cognate)
→
Irish
scéal
(inherited)
→
Scottish Gaelic
sgeul
(inherited)
→
Manx
skeeal
(inherited)
→
Old Irish
céul
(mention)
→
Old Irish
doscéulai
(affix)