Abstraction is seeing the wood but not the trees. It's stripping away irrelevant detail and context till you find something that stands on it's own. It's a simplification, distillation or reduction.
Cook a beef stew and you have a beef stew. Reduce the liquid off and you have a beef casserole. Remove stuff and what you have is different.
Hussain Bolts' fastest time over 100 meters is an abstraction of who he is. Its a single measure that completely misses all his other personal qualities and traits but still sums him up to a large part of the world.
Abstraction is not very interested in the wider context so doesn't narrate.
This is not abstract. You can pull a context out of it, maybe even a story.
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This is moving towards abstract. Although theres no narrative, if you know what to look for there's a local, cultural context.
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This is abstract. You can recognise it as paint on a floor in a developed country but it could be anywhere and there's very little to say anymore if you don't know the background.
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And this is very abstract. If I don't tell you what it is you're not very likely to guess.
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