Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
léigh
←
Latin
legō
(derived)
←
Old Irish
légaid
(inherited)
→
Irish
léir
(mention)
→
Irish
léacht
(suffix)
→
Irish
inléite
(prefix)
→
Irish
léitheoir
(suffix)
→
Manx
lhaih
(cognate)