Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
clach
←
Old Irish
cloch
(inherited)
→
Welsh
clog
(cognate)
→
Scottish Gaelic
clach-chopair
(compound)
→
Scottish Gaelic
clachair
(affix)