Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Westrobothnian
töst
←
Danish
tyst
(cognate)
←
Norwegian
tyst
(cognate)
←
Old Norse
tvistr
(cognate)
←
Swedish
tyst
(cognate)
→
Westrobothnian
tösteli
(suffix)