If I asked you to memorize the list of words off to the right and later write them down; it would be considered a recall task. If instead I showed you a list of words and asked which ones were on the list; it would be a recognition task. The difference is recognition uses context which makes it easier to remember.

Schema can cause inclusion errors like say including words that aren't on the list when asked to remember like "desk" or "pen". Since the list all office related, the schema included some related answers.