We use the term "pre-googling" for this sort of "information retrieval". You might have some concept in your head and you want to know the exact term for it, once you get the term you're looking for from LLM you'll move to Google and search the "facts".

This might be a weird example for native english speakers but recently I just couldn't remember the term for graph where you're allowed to move in one direction and cannot do loops. LLM gave me the answer (directed acyclic graph or DAG)right away. Once I got the term I was looking for I moved on to Google search.

Same "pre-googling" works if you don't know if some concept exits.