Hill and its cognatives

A hill is an elevation.

Hill derives from Old English hyll which in turn ultimately comes from Proto-Indo-european *kel,*kol to rise

Related to
Greek;kolonos
Latin;collis
Lith;kalnas;mountain
Low German hull
sanskrit;kutam;top

also related to holm;island

Apple, melon and cognatives

the word apple originally come from PIE *abel/abl.

Cognatives in IE languages include

Baltic;abola
Gaulic;avallo
German;apfel
Polish;Jablko
Serb;Jabuko
Welsh;afal

the word abalone(a type of Pacific shellfish) is derived from a word related to apple

Placenames related to apple include

Appleby
Appleford
Avella,a town near Naples
Avallon, France

head and its cognatives

Head was originally heafod in old english.

Derived originally from PIE *kauput

Cognatives in other indo-european language are

German;hsupt
Latin;caput
greek kefalo?
Sanskrit;kaput

placenames possibly connected are
cefalu
cephalonia

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Water and its cognatives

Originally from IE *water, it has cognatives in the following languages.
armenian,macedonian and phrgyian;Bedu
Gaelic;uisge; rivernames Ouse and Usk,axe,exeter whiskey and origin of the word whiskey

German;Wasser
greek;hydro
Hittite;vatar


Rivernames which are related possibly include the following;

Bedinja;croatia

Weser;germany

Mountain and its related words

Mountain is related to;
Basque;mendi
Latin;mons
possibly related to welsh pen and pindhos, a mountain range in Greece