Common Terms Query Corpus Question

Working on an implementation of Elasticsearch for enterprise search and I'm exploring alternatives to noise words / stop words.

Can Common Terms Query be used without defining the corpus manually? I.E. Does elasticsearch index the entire document repository and store terms as high / low frequency, does it do this on the fly with each search? Or is there another way this works?


I corpus is not defined manually. At most, you define the search query itself. The query is required because it's the very text you are looking for.

The term frequencies are stored in the index itself. When documents are indexed.

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