Retrieval is the process of accessing previously encoded and stored memories from long-term memory. It's like searching through your photo albums to find pictures from specific trips.
Recognition involves identifying previously encountered information or stimuli among various options. It's like recognizing faces of people in your old vacation photos even if their names don't immediately come to mind.
Recall refers to retrieving information from memory without any external cues or prompts. It's like trying to remember the exact details of a specific vacation, using only your own memories rather than looking at the old photos.