Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
German
flach
←
Proto-Germanic
*flakaz
(inherited)
←
Middle High German
vlach
(inherited)
←
Old High German
flah
(inherited)
→
English
fluke
(cognate)
→
German
abflachen
(confix)
→
German
Fläche
(suffix)
→
German
Flachbildschirm
(compound)
→
German
Flachkopfkatze
(compound)
→
German
flachbrüstig
(affix)
→
German
flachlegen
(affix)
→
German
verflachen
(confix)
→
German
Flachpfeife
(compound)
→
German
Flachbildfernseher
(compound)
→
German
Vielflach
(compound)
→
Finnish
laaja
(cognate)
→
Icelandic
flak
(derived)
→
Swedish
flak
(derived)