Setting Different Menus For Separate Sections of a Website

We’re building a website that has 2 sections. On the home page the user selects whether to navigate to section A or B. Some pages are shared between the 2 sections and others are unique to the specific section. We would like to avoid duplicating shared pages so it’s not considered duplicate content and is easier to edit going forward (edit 1 page instead of 2). Our thought was to have distinct menus for each section so section A would have a menu for pages relevant to topic A only (including shared pages) and section B would have a different menu for pages relevant to topic B only (including shared pages). Is there a way to do this?