Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Cornish
gwythi
←
Proto-Celtic
*wēt(t)ā
(inherited)
←
Old High German
wesanēn
(cognate)
←
Proto-Indo-European
*weyh₁
(derived)
←
Latin
viēscō
(cognate)
←
Lithuanian
výsti
(cognate)
←
Old Norse
visna
(cognate)
←
Old Cornish
guid
(inherited)
→
Breton
gwad
(mention)
→
Welsh
gwaed
(mention)
→
Cornish
goes
(mention)
→
Cornish
goos
(mention)