Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
foddey
←
Proto-Indo-European
*wasdʰos
(inherited)
←
Latin
vastus
(cognate)
←
Old Irish
fota
(inherited)
→
Scottish Gaelic
fada
(cognate)
→
Manx
foddeeaght
(suffix)
→
Manx
foddiaght
(suffix)