This activity is called the "inner/ outer circle" but instead of a circle, I do it with two long rows facing each other (like in speed dating) one of the rows teaches the vocabulary words to the row facing them. Students rotate their seats until they reach the end of the line or the first student who started teaching them the words. When done, rows change roles and the students who were teaching will learn the words and will repeat the same steps until done.
At the end of this activity all students will know all the words. IT is a great "cooperative learning" activity, it takes the whole period. I give about 3-4 minutes per flashcard.
Pictures attached in the instructions.