I was doing a log analysis. On the Words tab I entered two words (word1, word2) in the Words field and selected “all the words” in the Search field. On the Queries tab, my query was translated to “word1 OR word2”.
Back on the Words tab I changed the Search field to “any of the words”. The Queries tab translated that to “word1 AND word2”.
Seems exactly backwards to me.
And it appears that the Queries tab, not the Words tab, correctly reflects what the query will produce.