Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
parlous
←
English
perilous
(doublet)
←
Middle English
parles
(inherited)
←
Middle English
parlous
(mention)
←
Middle English
perlous
(mention)
←
Middle English
perilous
(mention)
←
French
périlleux
(cognate)
←
Old French
perilleus
(derived)
←
Old French
perillos
(mention)
←
Old French
perillous
(mention)
←
Old French
perilluse
(mention)
←
Old French
perilleuse
(mention)
←
Old French
perilleux
(mention)
←
Proto-Indo-European
*per-
(root)
←
Proto-Indo-European
*per-
(derived)
←
Latin
perīculōsus
(derived)
←
Latin
perīculum
(mention)
←
Latin
-ōsus
(mention)
→
English
parlously
(suffix)
→
English
parlousness
(suffix)