Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
German
nun
←
German
nu
(alter)
←
German
(alter)
←
German
colloquial; otherwise archaic
(alter)
←
German
jetzt
(mention)
←
German
nun dass
(clipping)
←
German
[[nun]] [[da]]
(mention)
←
Middle High German
nu
(derived)
←
Middle High German
nuo
(mention)
←
Middle High German
nuon
(inherited)
←
Proto-West Germanic
*nū
(inherited)
←
Old High German
nu
(inherited)
→
English
now
(mention)
→
German
Nu
(mention)
→
Esperanto
nun
(derived)
→
Latin
nunc
(mention)
→
Pennsylvania German
nau
(cognate)
→
Russian
ныне
(cognate)