shí​zhàn

combat

实战 (實戰) shí​zhàn
combat noun
actual fighting or warfare, as opposed to training or simulation

This new weapon has not yet been tested in actual combat.

practical application noun
real-world usage of skills or knowledge in professional or competitive contexts

Practical experience in the workplace is much more complex than textbook knowledge.

Frequency

Movie subtitles
1.49 per million appears in 1% of films
Written text
7.23 per million

Sources

Definitions
CC-CEDICT