Case study (language acquisition) ; Triggering (language acquisition) ; Language exposure (language acquisition) ; Input hypothesis; Input (language acquisition) ; Spracherwerb (lex.) ; Language acquisition (lex.) ; Vocabulary (language acquisition) ; Dual language acquisition; Bimodal language acquisition; Spracherwerb (biling.) ; Language acquisition (biling.) ; Bilingual language acquisition ; Sprachenwahl; Language choice; Diglossia ; Canada (English language in) ; Kanada (engl. Sprache in) ; English in Canada ; Frankokanadisch; Franco Canadian; Kanada (fr. Sprache in) ; Canada (French language in) ; French in Canada