activity
answer
background
blank
brain
challenge
closeup
column
cross
crossword
design
development
difficulty
drawing
education
educational
empty
entertainment
exercise
fun
game
hobby
idea
intellect
intellectual
intelligence
iq
knowledge
learn
leisure
logic
mind
object
paper
pattern
pencil
puzzle
quiz
recreation
riddle
solution
solving
space
square
template
think
thinking
view
word