実在は英語で
reality

英語の定義

実在
1. n. existence; reality
(hypernyms, ja, 存在, tr1=sonzai, t1=)
実在の学校の先生 - teacher of an actual school
2. v. to exist in real life
(hypernyms, ja, 存在する, tr1=sonzai suru, t1=to exist)

reality
1. n. The state of being actual or real.
The reality of the crash scene on TV dawned upon him only when he saw the victim was no actor but his friend.
2. n. A real entity, event or other fact.
The ultimate reality of life is that it ends in death.
3. n. The entirety of all that is real.
4. n. An individual observer's own subjective perception of that which is real.
5. n. (obsolete) Loyalty; devotion.
6. n. (legal, obsolete) Realty; real estate.