Does Marquee mean the same as billboard?

No, "marquee" and "billboard" do not mean the same thing. A marquee typically refers to a structure or sign that is often found outside theaters or venues, displaying the name of a show or event, usually with lights. A billboard, on the other hand, is a large outdoor advertisement meant to promote products or services, often placed along highways or in high-traffic areas. While both serve to convey information to the public, their functions and contexts differ.