* func, function, fun, defun fu, funct
* CamelCase vs snake_case
* whitespace, semicolon or comma usage
* var, int/integer/uint64/Integer/
* choice of (), {}, [] or better (){a[]}
* import/include/require, class/class, override, self vs this, new vs Class()
PS: next time you design a new language just make a random unique combination of the above.