grocer(n = noun.person) - a retail merchant who sells foodstuffs (and some household supplies);
is a kind of merchandiser, merchant
has particulars: greengrocer

   A trader who deals in meats, dairy products, produce, tea, sugar, spices, coffee, fruits, and various other commodities. [1913 Webster]

grocer, n. a dealer in food and household provisions.

Etymology:
ME & AF grosser, orig. one who sells in the gross, f. OF grossier f. med.L grossarius (as GROSS)

N  provision, supply, grist, grist for the mill, subvention, resources, groceries, grocery, providing, purveyance, reinforcement, reenforcement, commissariat, provender, ensilage, viaticum, caterer, purveyor, commissary, quartermaster, manciple, feeder, batman, victualer, grocer, comprador, restaurateur, jackal, pelican, sutler, grocery shop, grocery store.