Which concept refers to the transitional language system learners develop between their first and second languages?

The concept of interlanguage refers to the transitional language system that second language learners develop as they progress from their native language to their target language. It is characterized by a unique set of linguistic rules and vocabulary that combines elements from both the learner's first language and the second language they are acquiring. This system is dynamic and evolves as learners receive more input and practice in the target language, showcasing their developmental stages and the influence of their first language on their attempt to use the second language.

Interlanguage reflects the learner's current competence and understanding of the new language, including errors that are typical at various stages of language acquisition. These errors can arise from direct translation, overgeneralization of rules, or incomplete learning of the target language structures. As learners' proficiency increases, their interlanguage becomes more like the target language, gradually reducing the influence of their first language.

In contrast, pidgin refers to a simplified language that develops as a means of communication between speakers of different native languages, typically in trade or colonization contexts. Dialect refers to a regional or social variety of a language that has distinct pronunciation, grammar, or vocabulary, and code-switching is the practice of alternating between two or more languages or language varieties in conversation. Each of these concepts plays