Stopword

https://www.ranks.nl/stopwords
When not customized, the filter removes the following English stop words by default:

a, an, and, are, as, at, be, but, by, for, if, in, into, is, it, no, not, of, on, or, such, that, the, their, then, there, these, they, this, to, was, will, with

https://www.elastic.co/guide/en/elasticsearch/reference/current/analysis-stop-tokenfilter.html