Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
saoghal
←
Latin
saeculum
(derived)
←
Old Irish
saegul
(inherited)
→
Scottish Gaelic
saoghalta
(affix)
→
Scottish Gaelic
fad-shaoghalach
(affix)
→
Manx
seihll
(cognate)