Rock groups are musical ensembles that typically consist of a number of musicians playing instruments such as guitars, drums, and keyboards. The crossword solutions for the term rock groups include Veins (5 letters), Ores (4 letters), Bands (5 letters), and LODES (5 letters). Veins refer to a type of mineral deposit that is formed in cracks and fissures in rocks. Ores are rocks or minerals from which a valuable substance can be extracted. Bands are groups of people who play music together, usually for entertainment purposes. Finally, LODES are veins of ore that are found in rocks.