Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
ach
←
Proto-Celtic
*ektos
(inherited)
←
Scottish Gaelic
feuch
(mention)
←
Proto-Indo-European
*eghs
(inherited)
←
Old Irish
acht
(inherited)
→
Scottish Gaelic
greannach
(suffix)
→
Scottish Gaelic
saighdearach
(suffix)
→
Scottish Gaelic
dìleach
(suffix)
→
Scottish Gaelic
alcolach
(suffix)