Most languages are influenced by languages they proceed. Simula, C++, C#, and Java are clearly method calling languages. Smalltalk and Objective-C are clearly

Most languages are influenced by languages they proceed. Simula, C++, C#, and Java are clearly method calling languages. Smalltalk and Objective-C are clearly message passing languages. That is the biggest distinction. You will always be able to find a particular feature in a particular language that is influenced by languages that have preceded it.