adjunct
blood
bracket
branch
caste
category
clan
class
component
contingent
cross section
detachment
detail
division
dole
estate
fraction
grade
group
grouping
head
heading
installment
item
kin
label
level
order
parcel
part
particular
percentage
pigeonhole
portion
position
predicament
quadrant
quarter
quota
race
random sample
rank
rating
remainder
rubric
sample
sampling
section
sector
segment
mathematical group
cost-benefit
subfield
subgraph