Synonyms and related words :
biotype, blood, bracket, branch, caste, category, clan, class, division, estate, family, genotype, genus, grade, group, grouping, head, heading, kin, kingdom, label, level, order, phylum, pigeonhole, position, predicament, race, rank, rating, rubric, section, sept, series, set, species, station, status, strain, stratum, subclass, subdivision, subfamily, subgenus, subgroup, subkingdom, subspecies, subtribe, superclass, superfamily, superorder, superspecies, title, tribe, variety