It's a different name for the same thing.
Sweet wine, sake, and yellow wine all belong to rice wine, but what most people think of as rice wine is fermented from sweet wine curds, with a lighter flavor and low alcohol content, and in many places, rice wine is said to be sweet wine, sake, or mash.
Expanded Information:
Jiuzhu (酒酿), which was formerly known as "sweet wine", is a traditional Chinese wine. ", is a traditional Chinese specialty wine. Steamed river rice (glutinous rice) mixed with wine yeast (a special microbial yeast) fermented into a kind of sweet rice wine in our country across the country called differently also known as mash, wine, rice wine, sweet wine, sweet rice wine, glutinous rice wine, rice wine, wine lees. Wine is sweet, pungent and warm, containing sugar, organic acids, vitamins B1 and B2, etc. It can benefit the qi, promote fluid production, activate blood circulation, dissipate knots and reduce swelling. It is not only good for pregnant women to reduce water retention and swelling, but also suitable for breastfeeding women to promote lactation.
Rice wine, also known as wine, sweet wine. In the old days, it was called "sweet". Brewed with glutinous rice, it is a traditional specialty wine of the Han Chinese and most ethnic minorities. The main raw material is river rice, so also called river rice wine. In the north, it is generally called "rice wine" or "sweet wine". It is a kind of sweet rice wine made by fermenting steamed river rice (glutinous rice) with wine yeast (a kind of special microbial yeast). The brewing process is simple and the flavor is sweet and mellow. It has a very low alcohol content and is therefore very popular among people? The wine is made from high-quality brown glutinous rice. China's use of high-quality brown glutinous rice winemaking, has been more than a thousand years of long history. Rice wine has become the daily drink of farmers. Modern rice wine is mostly produced in factories
References: Rice Wine Brewing - Baidu Encyclopedia Rice Wine - Baidu Encyclopedia