二重: double, twofold / 二十: twenty

十四: fourteen

縦断:: running lengthwise / 銃弾:: bullet

銃火: gunfire

害獣: harmful animal

多重: multiple

充電器: electrical charger

strengthens the prefixed adjective or adjectival noun

one who does the previous word's action: -ist, -er / (board games) counter for moves in shogi, go, etc.

hand / handicraft, skill, talent / one who does an action: -ist, -er / handwork