Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
sheer-
←
Irish
síor-
(cognate)
←
Scottish Gaelic
sìor-
(cognate)
←
Old Irish
sír
(inherited)
→
Irish
síor-
(cognate)
→
Manx
sheer-veshtallagh
(affix)
→
Manx
sheer-veshtallys
(affix)