Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
rua
←
Old English
rēad
(cognate)
←
Proto-Celtic
*roudos
(inherited)
←
Welsh
rhudd
(cognate)
←
Irish
ruaí
(alter)
←
Irish
(alter)
←
Irish
dialectal
(alter)
←
Irish
ruacha
(alter)
←
Irish
(alter)
←
Irish
Cois Fharraige
(alter)
←
Irish
madra rua
(link)
←
Irish
ruán
(link)
←
Irish
donnrua
(link)
←
Irish
fia rua
(link)
←
Irish
cangarú rua
(link)
←
Irish
garal rua
(link)
←
Irish
siorc rua
(link)
←
Irish
ceannrua
(link)
←
Irish
giolla rua
(link)
←
Irish
arán rua
(link)
←
Ancient Greek
ἐρυθρός
(cognate)
←
Proto-Indo-European
*h₁rewdʰ-
(inherited)
←
Sanskrit
रुधिर
(cognate)
←
Old Irish
rúad
(inherited)
→
Irish
ruán
(suffix)
→
Irish
Ruadhán
(affix)
→
Irish
donnrua
(affix)
→
Irish
ceannrua
(affix)
→
Irish
rí rua
(compound)