Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
lón
←
Proto-Celtic
*lawano-
(derived)
←
Irish
aimsir lóin
(link)
←
Irish
am lóin
(link)
←
Irish
armlón
(link)
←
Irish
lónadóir
(link)
←
Irish
lónaigh
(link)
←
Irish
ceannaí lóin
(link)
←
Irish
lóncheannaí
(link)
←
Irish
lónroinn
(link)
←
Irish
long lóin
(link)
←
Irish
mála lóin
(link)
←
Irish
píosa lóin
(link)
←
Irish
sos lóin
(link)
←
Proto-Indo-European
*lewh₁-
(inherited)
←
Old Irish
lón
(inherited)
→
Irish
lónadóir
(suffix)
→
Irish
armlón
(affix)