to change; to transform; to convert

(bound form) weapons of war; arms; specifically referring to the shield and polearm used in ancient times

to be; to become; to act as; to serve as; to take as

(literary) peace or friendly relations between states; often used in the phrase 化干戈为玉帛 huà​gān​gē​wéi​yù​bó, meaning to turn conflict into peace