Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
mawn
←
Proto-Celtic
*māni-
(inherited)
←
Welsh
mawnbwll
(link)
←
Welsh
mawndir
(link)
←
Welsh
mawnog
(link)
←
Irish
móin
(cognate)