Answer: subsets

AnswerCrossword Clue
SUBSETS

Math groups

SUBSETS

Venn-diagram sections

SUBSETS

Small groups within large groups

SUBSETS
Groups within groups
SUBSETS
Divides up
SUBSETSVenn diagram areas
SUBSETSCircles within circle, in Venn diagrams
SUBSETSGroups with groups
SUBSETSInner circles in Venn diagrams