concrete; definite; specific; material; substantial
abstract
もっと具体的な計画を立てるべきだ。
We should make a more concrete plan.
具体的にどうすればいいか教えてほしい。
I want you to tell me specifically what to do.
彼の説明は具体的で分かりやすかった。
His explanation was concrete and easy to understand.