Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Cornish
mor
→
Welsh
mwyar
(cognate)
→
Cornish
morek
(suffix)
→
Cornish
mor du
(affix)
→
Cornish
morgowles
(compound)
→
Cornish
morgi
(compound)
→
Cornish
morhogh
(compound)
→
Cornish
morvleydh
(compound)
→
Cornish
morlader
(affix)
→
Cornish
morvil
(affix)