What does "abstract" mean in this context?

Native speaker’s answer
Rebecca
Here "abstract" refers to "abstract images" or art. These are images made up of shapes, colors, and other elements but don't look like a specific thing in the real world. Or, you can interpret them to look like something in the real world. Ex: I really like Mark Rothko's abstract artworks. Ex: Jane, is your drawing abstract? I can't tell what it is.