Subspecies(n.) A group somewhat less distinct than species usually are, but based on characters more important than those which characterize ordinary varieties; often, a geographical variety or race.
Thesaurus Entries
accession, accessory, accident, accidental, accord, accretion, addendum, addition, adjunction, adornment, affairs, affiliation, affinity, affix, affixation, agglutination, aggrandizement, alliance, ally, ampliation, amplification, annexation, appanage, appendage, appendix, approximation, appurtenance, arrangement, aspect, assemblage, associate, association, attachment, attendant, augmentation, auxiliary, bedfellow, bond, broadening, brother, brother-in-arms, circumstance, closeness, coadjutor, cohort, collateral, colleague, color, color patterns, combination, companion, compatriot, compeer, component, comrade, concomitant, confederate, confrere, connectedness, connection, consociate, consort, constituent, contents, contiguity, contingency, contingent, contrariety, corollary, crescendo, crony, cross section, dealings, decor, decoration, deduction, deployment, detachment, detail, disjunction, dispersion, division, dole, elaboration, element, embellishment, emblazonment, emblazonry, embroidery, enlargement, expansion, extension, extra, factor, fanning out, feature, fellow, fellow member, filiation, fixings, fixture, flare, flourish, flower arrangement, fraction, furniture arrangement, garnish, garnishment, garniture, happenstance, hiking, homology, illumination, incidental, increase, inessential, ingredient, installment, integrant, intercourse, intimacy, item, joining, junction, juxtaposition, liaison, link, linkage, linking, magnification, makings, mere chance, mutual attraction, nearness, nonessential, not-self, ornament, ornamentation, other, parcel, part, part and parcel, particular, percentage, portion, prefixation, propinquity, proximity, quadrant, quarter, quota, raising, random sample, rapport, reinforcement, relatedness, relation, relations, relationship, remainder, sample, sampling, secondary, section, sector, segment, share, similarity, specialty, splay, spread, spreading, subdivision, subgroup, subsidiary, subspecies, suffixation, superaddition, superfetation, superjunction, superposition, supplement, supplementation, sympathy, tie, tie-in, trim, trimming, unessential, union, uniting, upping, widening, window dressing