act                   do
aero                air
agri                 field
alt                   high
ambul            walk, go
anthr              man
aqua             water

ast                  star
aud                hear

biblio             book
bio                 life
brev             short
cand            glow, white
cap              head
cardi            heart
cert              sure

chron           time
cide, cise    cut, kill
commum    common
corp            body
crat             rule
cred            believe
cur              care
cycl             ring
dem            people