What is  a Word within a Word?

Often used in word games to see how many words you can find within a single word. 

A simple example being ALPINE

Strictly speaking contains just three words:  ALP  PIN and PINE
although some Scrabble fans may find more unlikely words. 

Some people take this to the extreme and make ANAGRAMS from the word e.g. for ALPINE we have found 27 anagrams (see below) but these are not true Words within Words. 

Ted Clarke used to make his own Words within Words:

e.g.   Chetongueek   = Che (tongue) eek  =  Tongue in Cheek !!

27 Anagrams of Alpine
Nepali 
penial
pineal
I Nepal
panel I
penal I
plane I
in leap
p.a. lien
p.a. line
p.a. Nile
pale in
in peal
an pile
in plea
ail pen
nip ale
pin ale
ape nil
nip lea
pin lea
nap lei
pan lei
lie nap
lie pan
pea nil