Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle English
knok
←
Middle English
knokken
(back-formation)
←
Middle English
knoc
(alter)
←
Middle English
knocke
(alter)
←
Middle English
knoke
(alter)
←
Middle English
knokk
(alter)
←
Middle English
knokke
(alter)
←
Scots
tnock
(link)
←
Scots
knack
(link)