Home language is a term used to describe the primary language spoken by an individual in their household. Other synonyms for home language include native language, mother tongue, first language, and mother language. Native language refers to the language one has grown up speaking, whereas mother tongue is the language learned from one's mother or caregiver. First language refers to the initial language one learns as a child and is used to communicate with others. Mother language is the language passed down from generation to generation. These synonyms highlight the importance of preserving one's cultural and linguistic identity through the language spoken at home.