Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
samhail
←
Proto-Indo-European
*sem-
(root)
←
Old Irish
samail
(inherited)
→
Welsh
fel
(cognate)
→
Irish
mionsamhail
(affix)
→
Irish
fótashamhail
(affix)
→
Irish
samhlaigh
(affix)