characteristic quality; special character; one's real ability; one's specialty
one's function; one's duty
fief; inherited estate
彼は本領を発揮した。
He demonstrated his true ability.
チームは本領が発揮できなかった。
The team was unable to demonstrate its true ability.
彼の本領は、このような厳しい状況でこそ光るものだ。
His true ability shines precisely in such difficult situations.