Rule for feminine · die
-enz → die · 0.5%, no exceptions
Nouns ending in -enz are feminine, as in Intelligenz (intelligence), Konkurrenz (competition) or Pressekonferenz (press conference). Many of them come from Latin, where the ending already marked an abstract noun, and German kept the feminine gender. It's a rare pattern - only 0.5% of the frequent nouns in our set - but in exchange it's very reliable: we didn't find a single exception. So you can apply this rule with confidence whenever you see a word ending in -enz.