Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
ilphósadh
←
Irish
il
(prefix)
←
Irish
pósadh
(prefix)
←
Manx
yl-phoosey
(cognate)
→
Manx
yl-phoosey
(cognate)