Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
prys
←
Proto-Celtic
*kʷerstyo-
(inherited)
←
Welsh
pren
(cognate)
←
English
hurst
(cognate)
→
Welsh
prysglwyn
(compound)
→
Scottish Gaelic
preas
(cognate)