Answer: families

AnswerCrossword Clue
FAMILIESFundamental social units.
FAMILIESThey have trees
familiesgroup of related things or individuals
familiesparents and their children as a group
familiesgroup of persons descended from a common ancestor
familiesset of relatives
familiesone or more adults and the children they care for
familiesFAMILY, a group of persons related by blood or marriage