noun, noun which may take the genitive case particle 'no'
older generation; past generation
Refers to people from a previous era, often contrasted with the current generation. Can be used in discussions about technology, values, or social change.
旧世代の政治家は、新しい技術に疎いことが多い。
Politicians of the older generation are often unfamiliar with new technology.
このゲームは旧世代のハードでは動かない。
This game doesn't run on older-generation hardware.
若者 means 'young people' in general, while 旧世代 specifically refers to an older generation in contrast to a newer one.
Compound of 旧 (old, former) and 世代 (generation).