resource utilization group. Health administration Any of a number of groups into which a nursing home resident is categorized, based on functional status and anticipated use of services and resources.
Rice wine vinegar and rice vinegar are the same thing, so that's easy. For additional pantry-stocking: Seasoned rice vinegar is just rice vinegar with a little salt & sugar added. It's intended to be the right mixture for a number of recipes, not the least of which is sushi rice, although in my experience you're better off seasoning plain rice vinegar to the correct balance.
It can be made with a wide assortment of ingredients, and an array of formulas produce it, so there is an immense variance in taste. Like other vinegars, black vinegar is made by fermenting something, in this case grain, and then allowing the resulting liquid to age. After aging, the vinegar is bottled for sale.