Think of agile as the broader picture; it’s the project management method being used.
Scrum is one popular method of agile that focuses specifically on the process and necessary steps to take.
So basically, agile is the plan for which methods will be used and scrum is the actual step-by-step procedure itself.
And while your interview may be mostly agile-focused, you should always expect and be prepared to answer these next interview questions as well.