Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
má
←
Breton
mar
(cognate)
←
Proto-Celtic
*magos
(inherited)
←
Proto-Celtic
*mā
(inherited)
←
Proto-Celtic
*ma
(mention)
←
Irish
magh
(alter)
←
Irish
(alter)
←
Irish
obsolete
(alter)
←
Irish
oighear má
(link)
←
Irish
má-oifigeach
(link)
←
Irish
dá
(link)
←
Irish
mura
(link)
←
Irish
más
(link)
←
Irish
gualainn má gualainn
(link)
←
Irish
leath má leath
(link)
←
Irish
má gcuairt
(link)
←
Proto-Indo-European
*meh₂
(inherited)
←
Cornish
-
(cognate)
←
Old Irish
mag
(inherited)
←
Old Irish
má
(inherited)
→
Irish
más
(mention)
→
Irish
lármhá
(prefix)