These are the most frequently used words in this book.
across
along
appear
area
basin
between
binoculars
border
bright
broad
center
central
crater
credit
crust
dark
deep
diameter
distance
drawing
earth
east
eastern
eroded
eye
eyepiece
far
features
field
fig
flooded
floor
full
high
hills
illumination
image
imbrium
impact
inner
km
large
largest
lava
length
lens
libration
lies
light
limb
line
long
low
lunar
mare
material
may
mons
montes
moon
mountain
near
north
northern
number
observer
part
peaks
place
plain
prominent
rays
region
ridges
rilles
rim
ring
rocks
see
seen
several
shadow
side
small
south
southern
sun
surface
system
telescope
terminator
time
two
used
view
visible
wall
west
western
years