Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
mair-chlaare
←
Irish
méarchlár
(cognate)
←
Manx
mair
(compound)
←
Manx
claare
(compound)