old work; existing work
Refers to a previously created work, such as an earlier film, novel, or piece of art, often in contrast to a new work. Can also mean an existing work that is not necessarily old.
I watched the director's old work again.
At this video store, you can rent old titles for 100 yen each.
This novel is one of his earlier works.
I found a nostalgic movie in the old-releases section.
He prefers to watch old films rather than new releases.
旧作 refers to an older or previously released work, while 新作 refers to a brand-new work just released.
旧作 refers to an older, earlier work, the direct opposite of 近作, which means a recent work.
Compound of 旧 (old, former) and 作 (work, production).