Anagram

An anagram is a word or phrase formed by rearranging the letters of another, using each letter the same number of times.

Permutation: A permutation is an ordering of a set of objects. An anagram rearranges a word’s letters, making it a permutation constrained by letter identity.
Word game: A word game is a game whose play depends on language or vocabulary. Anagram challenges turn letter rearrangement into a test of vocabulary and pattern recognition.
Listen and silent: “Listen” and “silent” are English words formed from the same letters. This compact pair illustrates an exact anagram with a striking change in meaning.
Spoonerism: A spoonerism is a speech error or wordplay that exchanges the initial sounds of two words. Spoonerisms swap sounds between words rather than rearranging all letters within one expression.
Multiset: A multiset is a collection in which elements can occur more than once. Anagrams preserve each letter’s multiplicity, not merely the set of distinct letters.
Anagram solver: An anagram solver finds words or phrases that use a given set of letters. Solvers search word lists for valid rearrangements of supplied letters.
Clint Eastwood and Old West action: “Clint Eastwood” and “Old West action” contain the same letters with the same frequencies. The phrase is a well-known anagram whose wording alludes to the actor’s screen persona.
Lipogram: A lipogram is a text deliberately written without using one or more specified letters. A lipogram restricts which letters appear; an anagram preserves a given inventory.
Character Frequency: Character frequency is the count of each character in a string. Comparing frequency counts provides a direct test of whether two strings are anagrams.
Wordplay: Wordplay is the playful or inventive use of language and its forms or meanings. Anagrams create wit by making a new expression from the letters of another.

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