animal
art
astronomer
astronomy
bird
book
brown
cap
cartoon
certificate
clip
college
concepts
contemplation
curiosity
cute
degree
detective
diploma
discovery
education
equipment
exam
expertise
exploration
eyesight
focus
glass
glasses
graduation
hat
holding
illustration
insignia
instrument
intelligence
isolated
learning
lens
literature
magnifying
mortarboard
observatory
optic
optical
owl
page
painting
paper
professor
reading
school
science
scientist
scroll
searching
spy
student
study
studying
success
surveillance
tassel
teacher
teaching
telescope
tool
tripod
university
wisdom
wise