He was deeply immersed in contemplation.

I received words of praise from my boss.

It's hard to accept this reality.

This VR game has too much sense of reality, it's like I'm really there.

I think that plan lacks realism.

His thinking is completely detached from reality.

He is a realist who values reality more than dreams.

He is a realist, not a dreamer.

His proposal is pragmatic and has a high possibility of being implemented.

He surprised people by using illusionary techniques.