Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
ríomh-
←
Proto-Celtic
*rīmā
(derived)
←
Welsh
rhif
(cognate)
←
Irish
ríomh
(mention)
←
Old Irish
rím
(derived)
→
Irish
r-
(mention)
→
Irish
ríomhleabhar
(affix)