demo- people
stereo- solid
ism- doctrine
cogn- know
sur- over
alter- other
astr- star
dyna- power
chron- time
hyper- over
luna- moon
octa- eight
gyro- turn
contra- against
geo- earth
helio- sun
thermo- heat
tetra- four
meter- measure
scope- look
son- sound
dec- ten
stell- star
amat- love
