adjective
Definition: Relating to words or expressions that point to specific things or people, depending on who is speaking or the context of the conversation.
Example: In linguistics, indexical expressions like 'I' or 'here' change meaning based on who is speaking and where they are.
noun
Definition: A word or sign that points to something specific in context, often depending on the situation or speaker.
Example: In the sentence 'I am here', the word 'I' is an indexical that refers to the speaker.