Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
þó
←
Proto-Germanic
*þauh
(inherited)
→
English
though
(mention)
→
Old English
þeah
(cognate)
→
Faroese
tó
(inherited)
→
Gutnish
tott
(mention)
→
Icelandic
þó
(derived)
→
Norwegian Bokmål
da
(mention)
→
Norwegian Nynorsk
do
(inherited)
→
Norwegian Nynorsk
da
(mention)
→
Old Norse
þeygi
(suffix)
→
Swedish
dock
(cognate)