plumber(n = noun.person) pipe fitter - a craftsman who installs and repairs pipes and fixtures and appliances;
is a kind of artificer, artisan, craftsman, journeyman
1. One who works in lead; esp., one who furnishes, fits, and repairs lead pipes. [1913 Webster]
2. Any worker who installs or repairs piping and related equipment for conveyance of water, gas, or drainage into or out of buildings, or within buildings to fixtures or equipment using water. The type of material used for the conduits varies with the application, and may be may be of lead, iron, copper, glass, palstic, or other material. [PJC]
plumber, n. a person who fits and repairs the apparatus of a water-supply, heating, etc.
Etymology:
ME plummer etc. f. OF plommier f. L plumbarius f. plumbum LEAD(2)
1. helper(n = noun.person) assistant, help, supporter - a person who contributes to the fulfillment of a need or furtherance of an effort or purpose; "my invaluable assistant"; "they hired additional help to finish the work"
is a kind of worker
has particulars: coadjutor, accomplice, confederate, aide, auxiliary, attendant, attender, tender, bat boy, dental assistant, deputy, lieutenant, actor's assistant, dresser, event planner, facilitator, flower girl, girl friday, enforcer, hatchet man, cat's-paw, instrument, pawn, birthing coach, doula, labor coach, monitrice, underboss, fashion model, manakin, manikin, mannequin, mannikin, model, model, poser, paraprofessional, powder monkey, prompter, theater prompter, chief assistant, man friday, right-hand man, secretarial assistant, secretary, sidesman, foot soldier, subordinate, subsidiary, underling, water boy, waterer, whipper-in
Derived forms verb help1, verb help6
2. helper(n = noun.person) benefactor - a person who helps people or institutions (especially with financial help);
is a kind of good person
has particulars: benefactress, bondsman, bondswoman, bestower, conferrer, donor, giver, presenter, donor, fairy godmother, good samaritan, do-gooder, humanitarian, improver, liberator, accommodator, obliger, offerer, offeror, patron, sponsor, supporter, provider, deliverer, rescuer, savior, saviour, sparer, uncle
Derived forms verb help1, verb help6
One who, or that which, helps, aids, assists, or relieves; as, a lay helper in a parish. [1913 Webster]
"Thou art the helper of the fatherless." [1913 Webster]
"Compassion . . . oftentimes a helper of evils." [1913 Webster]
N auxiliary, recruit, assistant, adjuvant, adjutant, ayudante, coaid, adjunct, help, helper, help mate, helping hand, midwife, colleague, partner, mate, confrere, cooperator, coadjutor, coadjutrix, collaborator, ally, friend, confidant, fidus Achates, pal, buddy, alter ego, confederate, accomplice, complice, accessory, accessory after the fact, particeps criminis, socius criminis, aide-de-camp, secretary, clerk, associate, marshal, right-hand, right-hand man, Friday, girl Friday, man Friday, gopher, gofer, candle- holder, bottle-holder, handmaid, servant, puppet, cat's-paw, jackal, tool, dupe, stooge, ame damnee, satellite, adherent, votary, sectarian, secretary, seconder, backer, upholder, abettor, advocate, partisan, champion, patron, friend at court, mediator, angel (theater, entertainment), friend in need, Jack at a pinch, deus ex machina, guardian angel, tutelary genius.