Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
shiaghtinane
←
Irish
seachtanán
(cognate)
←
Manx
shiaghtin
(suffix)
←
Manx
ane
(suffix)