Describes something related to the operation or functioning of a system, process, or machine. Often used in technical or business contexts.
This system has operational problems.
manipulative
Refers to behavior that seeks to control or influence others in a cunning or unfair way. Often used in psychological or interpersonal contexts.
People around him are fed up with his manipulative attitude.
Derived from 操作 (そうさ, 'operation; manipulation') + 的 (てき, '-like; -al').