Synonyms and Stemming
Improve recall in full-text search by teaching Elasticsearch about word variants and equivalents using stemming token filters and synonym filters.
Closing the Vocabulary Gap
Users rarely type the exact words stored in your documents. They search running but your text says run, or they type laptop when the doc says notebook. Two analysis techniques bridge this gap: stemming and synonyms.
What Stemming Does
Stemming reduces words to a common root form. running, runs, and ran may all become run. This means a query matches regardless of the grammatical form used.