"They didn't learn from an abstract or institutional sense, from a music school," he says.

If you think a moment about the second sentence, you see that it means only plant, and this in a very abstract sense.

I've never thought of time except in an abstract sense.

She had lived long enough to have a vague abstract sense of her own mortality.

"Absolute difference" is the most general and abstract (mental reflection) sense.

Meaning the idea that war can be prevented by making it costly in an abstract sense for people is not going to work.

It is generally viewed as a positive political ideal in the abstract sense.

This causes his landscapes to not only have a real feel to them, but also an abstract sense of expression.

To highlight the abstract sense and not the objective.

In an abstract sense, these subjects are also synthetic geometry.