This is the 66th most frequent Japanese word.
万
"万" means "ten thousand" in English.
In this sentence, '万' is used to denote the number ten thousand, representing a specific quantity.
私の家には本が万冊あります。
In my house, there are ten thousand books.
Here, '万' is combined with '人' to create '万人', which means 'everyone' or 'all people.'
この芸術作品は万人に感動を与える。
This piece of art inspires everyone.
In this context, '万' is used as part of '万一', meaning 'just in case' or 'if by any chance.'