distributor vs jobber

distributor and jobber both are nouns.

Word	Noun	Adjective	Verb	Adverb
distributor	Yes	No	No	No
jobber	Yes	No	No	No

As nouns, jobber is a hyponym of distributor; that is, jobber is a word with a more specific, narrower meaning than distributor:

distributor: someone who markets merchandise
jobber: someone who buys large quantities of goods and resells to merchants rather than to the ultimate customers

Other hyponyms of distributor include middleman, wholesaler, retail merchant, retailer, ship chandler, wool stapler.

distributor (noun)	jobber (noun)
electrical device that distributes voltage to the spark plugs of a gasoline engine in the order of the firing sequence	someone who buys large quantities of goods and resells to merchants rather than to the ultimate customers
a company that markets merchandise
someone who markets merchandise
a person with authority to allot or deal out or apportion