Rule for masculine · der
-ich/-ig → der · 0.5% (exception: das Reich)
Many nouns ending in -ich (and, with the same pronunciation, in -ig, as in König) are masculine: der Bereich, der Vergleich, der König. It covers 0.5% of frequent words, with the plural usually formed in -e (Bereiche, Vergleiche). The clear exceptions are das Reich (empire/realm) and its compound das Königreich (kingdom) - even though they share the same ending, they stay neuter because they're built around the word "Reich", which is itself neuter.