Notice none of your proposed examples deal with the grammatical structure (syntax, semantics, morphological relationship), only with lexical variety. An apt comparison is as follows: now, plural words in English end in “r”.
Okay, bad examples from my side. Changes that affect grammatical structure might be “bro” becoming popular as a pronoun, new tense structure found in Modern Mandarin or plural adjustments like German Kakteen > Kaktusse. Grammatical structure changes just as much as other aspects of a language.
Notice none of your proposed examples deal with the grammatical structure (syntax, semantics, morphological relationship), only with lexical variety. An apt comparison is as follows: now, plural words in English end in “r”.
Okay, bad examples from my side. Changes that affect grammatical structure might be “bro” becoming popular as a pronoun, new tense structure found in Modern Mandarin or plural adjustments like German Kakteen > Kaktusse. Grammatical structure changes just as much as other aspects of a language.