Final answer:
An anagram is a word or phrase created by rearranging the letters of another word or phrase, such as turning 'listen' into 'silent'.
Step-by-step explanation:
A word or phrase formed by rearranging the letters of another word or phrase is called an anagram. Anagrams are commonly used as a form of word play in puzzles and games. In order to create an anagram, you change the order of the letters without adding or removing any.
For example, the word 'listen' can be rearranged to form the word 'silent'. This is a common practice not only in English but in many languages where the letters of a word can be repositioned to give a new word, phrase, or even sentence.
An altered word is a word/phrase formed from another word or phrase by changing the order of the letters. This can be done by rearranging the letters in the word or phrase to create a new word or phrase. For example, the word 'listen' can be rearranged to form the word 'silent'.
Another example is the phrase 'United States of America', which can be rearranged to form 'I'm a true fan of 'States'. Altered words can be used in word games like word scrambles or puzzles to create new words or phrases.