angle
back
background
black
blue
book
collection
color
copy space
cover
dictionary
document
education
exam
food
group
hardcover
heap
high
illustration
information
learning
library
literature
medium
multi
nobody
objects
orange
order
page
paper
pink
reading
red
row
school
stack
stacking
study
tall
teach
text
textbook
university
vertical
view
white
wisdom