Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
pysgod
←
Breton
pesk
(mention)
←
Proto-Brythonic
*pɨskọd
(inherited)
←
Proto-Brythonic
*pɨsk
(cognate)
←
Welsh
pysg
(mention)
←
Welsh
pysgodyn
(mention)
←
Cornish
pysk
(mention)
←
Latin
piscātus
(derived)
←
Latin
piscor
(mention)
←
Latin
piscis
(mention)
←
Middle Welsh
pysgawd
(inherited)
→
Breton
pesk
(mention)
→
Welsh
pysgodyn
(affix)
→
Welsh
pysgod aur
(mention)
→
Welsh
cathbysgod
(affix)
→
Welsh
pysgota
(affix)
→
Scottish Gaelic
iasg
(cognate)
→
Cornish
pysk
(mention)