Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
tiomna
←
Old Irish
timne
(inherited)
←
Old Irish
do·immna
(mention)
→
Irish
tiomnaigh
(affix)
→
Irish
tiomnach
(affix)
→
Irish
tiomnóir
(affix)
→
Irish
tiomnacht
(affix)
→
Scottish Gaelic
tiomnadh
(cognate)