17.  Recall is a way to retrieve information from our memory without any cues.  For example, remembering someone's phone number when placing a call or remembering what you studied when taking a test.  Recognition is another form of retrieving information from memory.  In this case, you are identifying someone or something from previous encounters.  In this process, you compare the information you previously learned or saw with what you are currently seeing or experiencing.   In relearning, you are basically learning something you previously learned.  For example,  I learned French when I was in high school and did really well, then in college I continued taking French courses and it became easier for me to learn the language because I had already been exposed to it in high school.