So many are taken over verbatim from Chinese. There are some very comprehensive Yojijukugo (literally just meaning former character compound word) collections o

So many are taken over verbatim from Chinese. There are some very comprehensive Yojijukugo (literally just meaning former character compound word) collections on the net like https://yoji-jukugo.com/ https://yoji-jukugo.com/ Sometimes you will have to map between simplified Chinese characters and modern Japanese characters. Easy enough though, since they still look very similar.