CIDE DICTIONARY
folks, n. collect. & pl. [AS. folc; akin to D. volk, OS. & OHG. folk, G. volk, Icel. f, Sw. & Dan. folk, Lith. pulkas crowd, and perh. to E. follow.].
Folk song, one of a class of songs long popular with the common people. -- Folk speech, the speech of the common people, as distinguished from that of the educated class.
THESAURUS
folks
agnate, ancestry, blood, blood relation, blood relative, brood, children, clansman, cognate, collateral, collateral relative, connections, consanguinean, distaff side, distant relation, enate, family, flesh, flesh and blood, german, get, hearth, homefolks, house, household, issue, kin, kindred, kinfolk, kinnery, kinsfolk, kinsman, kinsmen, kinswoman, kith and kin, menage, near relation, next of kin, offspring, people, posterity, relations, relatives, sib, sibling, spear kin, spear side, spindle kin, spindle side, sword side, tribesman, uterine kin