spherical sector
adjunct
component
contingent
crescent
cross section
detachment
detail
district
division
dole
fraction
half circle
hemicycle
installment
item
parcel
part
particular
percentage
portion
precinct
quadrant
quarter
quota
random sample
remainder
sample
sampling
section
segment
semicircle
sextant
share
subdivision
subgroup
subspecies
computer memory unit
measuring device
measuring instrument
measuring system
parcel of land
piece of ground
piece of land
plane figure
tract
two-dimensional figure
sectors
sect
area
asset
community
economy
environment
firm
industry
infrastructure
network
organization
security
stock
technology
Hector
Rector
Schechter
collector
connecter
connector
defector
detector
director
erector
hector
injector
inspector
lecter
lector
nectar
objector
projector
protector
rector
reflector
specter
spectre
vector