"scholarly activities" vs. "research activities" in Australia for the purpose of applying to a lecturer position
I am currently out of academia, but have worked at Lecturer level in Australia (US equivalent of Assistant Prof).  To my understanding, asking about your "research activities" is a cue for you to talk about your published (and in-progress) papers, and your field of research, and "scholarly activities" is a bit broader, allowing you to talk about other activities that do not result in publications to you (e.g., refereeing papers, editing a journal, holding an administrative position in a professional body, etc.).  That is how I would interpret it, but if in doubt, be proactive and contact them; there is zero chance of your enquiry being taken negatively.