adult
background
blue
blur
bodypart
book
borrow
casual
closeup
college
concept
day
different
education
exchange
exchanged
exchanging
female
friend
friendship
give
giving
graduate
hand
hardcover
hold
holding
information
knowledge
learning
lend
literature
male
man
outdoors
paper
people
return
school
share
side
student
study
swap
take
taking
textbook
two
university
woman