Why are some characters more preferred in some areas? Why are some characters preferred in some areas more than others? I am referring to 綫 vs 線 in Hong Kong. They mean the same thing right?
I was also reading some articles related to the Dragon Boat Festival, why is 粽 preferred, but I also see the character 糭 in some (but really rare occasions).
Would you have other examples?
This is called 异体字 and I don't know this concept in English. In the old days, there are often multiple characters for a single 字, if you know some japanese kanji, you would even find more 异体字, some even different from those in China.