# Definitions

- [What is an entity?](/datashare/usage/faq/definitions/what-is-a-named-entity.md)
- [What are NLP pipelines?](/datashare/usage/faq/definitions/what-are-nlp-pipelines.md)
- [What is fuzziness?](/datashare/usage/faq/definitions/what-is-fuzziness.md)
- [What are proximity searches?](/datashare/usage/faq/definitions/what-are-proximity-searches.md)