1. Subject Matter: This refers to the topic or area of study being discussed. For example, the subject matter of a biology class is biology, and the subject matter of a history class is history.
2. Language of Instruction: This refers to the language used to teach a subject. For example, a biology class in the United States is likely taught in English, while a biology class in France would be taught in French.
3. Academic Language: This refers to the specialized vocabulary and grammar used in formal academic settings. It often includes technical terms, complex sentence structures, and formal writing conventions.
4. Language for Specific Purposes (LSP): This refers to the language used in a particular profession or field. For example, legal language, medical language, or technical language are all examples of LSP.
5. Domain-Specific Language: This refers to the language used within a particular domain of knowledge or activity. For example, the language of computer programming or the language of cooking are both examples of domain-specific language.
Can you give me more context about how you encountered the term "subject language"? This would help me understand what you are referring to and provide a more accurate answer.