A linguistic atlas is a collection of maps or charts that illustrate the variation in language among geographic regions or social groups. Synonyms for this term include dialect atlas, speech map, phonetic chart, and language survey. These tools are used by linguists and researchers to study different speech patterns, cultural influences, and language evolution. They can also be used for educational purposes to promote language awareness and understanding. Linguistic atlases are valuable resources for anyone interested in language and culture, and they provide insights into the complexity and diversity of human communication.