worker vs union member

Other hyponyms of worker include caster, finisher, assistant, help, helper, supporter, beater, bill poster, bill sticker, poster, bleacher, boater, boatman, waterman, carter, charcoal burner, accumulator, collector, gatherer, comber, cornhusker, driver, employable, employee, free-lance, free lance, freelance, freelancer, independent, self-employed person, gutter, hanger, lamplighter, melter, moonlighter, mopper, muzzler, nailer, oiler, part-timer, peeler, planter, plier, plyer, processor, pruner, trimmer, dragger, puller, tugger, quarrier, quarryman, ragsorter, blackleg, rat, scab, strikebreaker, scrubber, seasonal, seasonal worker, retainer, servant, sheller, shelver, shingler, shoveler, shoveller, skidder, skilled worker, skilled workman, trained worker, hard worker, slave, striver, solderer, splicer, splitter, stainer, stemmer, stringer, sprigger, stemmer, stripper, tacker, tapper, teaser, temp, temporary, temporary worker, toiler, thrower, throwster, tier, tier up, tiler, topper, topper, trade unionist, unionist, twiner, unpaid worker, volunteer, wallah, washer, winder, wiper, working girl, workmate.