Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
placate
←
Old English
flōh
(cognate)
←
English
please
(link)
←
Proto-Indo-European
*plāk-
(derived)
←
Proto-Indo-European
*pele-
(mention)
←
Latin
plācātus
(borrowed)
←
Latin
plācō
(mention)
←
Latin
placeō
(cognate)
→
English
plea
(mention)
→
English
supple
(link)
→
English
placater
(suffix)
→
English
placative
(suffix)
→
English
placatable
(suffix)