While "popular" is an adjective, populous is the specific adjective form meaning "thickly inhabited" or having a large population. It directly relates to the quantity of people in an area.

১. Popularize is a verb meaning to make something liked by many people.
২. Popularity is a noun that describes the state of being liked or admired.
৩. "Popular" means liked by many, but "populous" means containing many people.

অতিরিক্ত তথ্য: Populous is often used in a geographical context, such as "a populous city."