license; permission to use
Refers to formal or official authorization to use something, such as software, a facility, or copyrighted material.
You need to apply for a license to use this software.
You cannot use the facility without permission.
General permission or approval; 使用許可 specifically means permission to use something.
Often a government-issued license or certification (e.g., driver's license); 使用許可 is broader and can refer to any usage authorization.
Compound of 使用 (use) and 許可 (permission).