Optionality (theory of grammar) ; Frequency (synt.) ; Sociolect ; Elderspeak; Gerontolekt; Seniorensprache; Old age (language behavior) ; Lemmata ; Genetivus; Sächsischer Genitiv; Genitive ; Basic level concept; Prototype (semant.) ; ± animate (semant.) ; Canada (English language in) ; Kanada (engl. Sprache in) ; English in Canada