Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
arian
←
Breton
arc'hant
(cognate)
←
Proto-Brythonic
*arɣant
(inherited)
←
Proto-Celtic
*argantom
(inherited)
←
Irish
airgead
(cognate)
←
Proto-Indo-European
*h₂erǵ-
(root)
←
Proto-Indo-European
*h₂erǵ-
(inherited)
←
Latin
argentum
(cognate)
←
Old Welsh
argant
(inherited)
←
Middle Welsh
ariant
(inherited)
→
English
Ariana
(mention)
→
Welsh
arianrhod
(compound)
→
Welsh
Ariannin
(affix)
→
Welsh
ariannog
(affix)
→
Irish
airgead
(cognate)
→
Scottish Gaelic
airgead
(cognate)
→
Ancient Greek
ἀργός
(cognate)
→
Manx
argid
(cognate)