Many types of word puzzles depend on manipulating the letters of a particular word or phrase. Anagrams and charades preserve the letter-set of the initial word set; beheadments and word ladders change a letter at a time. Beheadments, charades and word ladders preserve the order of letters in the given word; anagrams alter it.
"Unfed Rocks and Scaly Things,"
Word Ways: Vol. 24
, Article 17.
Available at: http://digitalcommons.butler.edu/wordways/vol24/iss2/17