arrange
blackboard
board
border
business
categorization
categorize
category
chalk
chalkboard
circle
clarify
class
classification
classify
concept
confusion
division
draw
education
gather
geometry
group
idea
information
kinds
management
message
order
organize
picture
set
simplify
sort
square
symbol
symbolic
table
text
top view
topic
transfer
transform
triangle
type
wood
word
write
writing