Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
twentieth
←
Old English
twēntigoþa
(inherited)
←
English
twenty
(suffix)
←
English
eth
(suffix)
←
Middle English
twentithe
(inherited)
←
Middle English
twentiþe
(mention)
→
English
twentiethly
(suffix)
→
Cimbrian
sbòanskhte
(cognate)
→
Pennsylvania German
zwansichscht
(cognate)