Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
cylch
←
Breton
kelc'h
(cognate)
←
Proto-Brythonic
*kɨrxl
(inherited)
←
Latin
circulus
(borrowed)
←
Old Welsh
circhl
(inherited)
←
Middle Welsh
kylch
(inherited)
→
Welsh
cylchu
(affix)
→
Welsh
cylched
(affix)
→
Welsh
cylchgrawn
(affix)
→
Welsh
amgylch
(affix)
→
Welsh
eurgylch
(compound)
→
Welsh
lleugylch
(compound)
→
Welsh
awyrgylch
(compound)
→
Welsh
cylchdro
(compound)
→
Welsh
cylchfan
(affix)
→
Welsh
cylchyn
(affix)
→
Welsh
cylchlythyr
(affix)
→
Cumbric
kelchyn
(cognate)