Genus

Noun

 * 1)  a rank in the classification of organisms, below family and above species; a taxon at that rank
 * 2) A group with common attributes
 * 3)  A number measuring some aspect of the complexity of any of various manifolds or graphs
 * 4)  Within a definition, a broader category of the defined concept.

Thesaurus
blood, branch, brand, breed, cast, character, clan, class, classification, color, denomination, description, designation, family, feather, form, genotype, genre, glossology, grain, ilk, kidney, kin, kind, kingdom, label, line, lot, make, manner, mark, mold, nature, nomenclature, number, order, orismology, persuasion, phylum, place-names, place-naming, polyonymy, race, section, series, shape, sort, species, stamp, strain, stripe, style, subclass, subfamily, suborder, subspecies, taxonomy, terminology, the like of, the likes of, toponymy, tribe, trinomialism, type, variety