Rudaceous rock is a type of rock that is composed of coarse and angular fragments that are held together by a cementing agent. This rock type is commonly found in alluvial fans, river beds, and slopes. There are several other synonyms for rudaceous rock, such as conglomerate, breccia, and agglomerate. Conglomerate is a type of sedimentary rock that consists of rounded pebbles and boulders. Breccia is a rock that is composed of angular fragments that are packed together tightly. Agglomerate is a type of volcanic rock that is composed of large fragments that are held together by a cementing agent. Each of these synonyms has a distinct composition and texture but shares a similar coarse and angular appearance with rudaceous rock.