Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
regexen
←
English
regex
(suffix)
←
English
en
(suffix)
←
English
-en
(mention)
←
English
oxen
(mention)
←
English
ox
(mention)
←
English
VAXen
(mention)