Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
nightmare
←
Old English
*nihtmare
(inherited)
←
German
Nachtmahr
(cognate)
←
English
night
(compound)
←
English
mare
(compound)
←
Middle English
night-mare
(inherited)
←
Middle Low German
nachtmār
(cognate)
←
Proto-Indo-European
*mer-
(root)
←
Dutch
nachtmerrie
(cognate)
←
Scots
nichtmare
(cognate)
←
Scots
nichtmeer
(mention)
→
English
mare
(link)
→
English
mara
(link)
→
English
nightmarish
(suffix)
→
English
daymare
(blend)
→
English
nightmarelike
(suffix)
→
English
morningmare
(blend)
→
English
midnightmare
(prefix)
→
English
mid-nightmare
(prefix)
→
English
nightmarey
(suffix)
→
English
nightmary
(suffix)
→
English
frightmare
(blend)
→
English
nightmarious
(suffix)
→
German
Mahr
(cognate)
→
Finnish
mara
(cognate)
→
French
cauchemardesque
(link)