Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
móin
←
Old Irish
móin
(inherited)
→
Welsh
mawn
(cognate)
→
Irish
móinfhéar
(affix)
→
Irish
móinteach
(suffix)
→
Irish
móintiúil
(affix)
→
Irish
mónóg
(affix)