Mainstream, the quality of being common, well received, in demand, widely understood
- See e.g.: popular culture, popular fiction, popular music, popular science
  - Popular clique, a contemporary youth subculture associated with preppy and Ivy league fashion. See also Jock.
Populace, the total population of a certain place
- Populism, a political philosophy seeking to use the instruments of the state to benefit the people as a whole
Informal usage or custom, as in popular names, as opposed to formal or scientific nomenclature

Companies

Popular, Inc., also known as Banco Popular, a financial services company
Popular Holdings, a Singapore-based educational book company
The Popular (department store), a chain of department stores in El Paso, Texas, from 1902 to 1995
The Popular Magazine, an American literary magazine that ran for 612 issues from November 1903 to October 1931

In media

"Popular" (Darren Hayes song) (2004), on the album The Tension and the Spark
"Popular" (Eric Saade song) (2011), on the album Saade Vol. 1
"Popular" (Nada Surf song) (1996), on the album High/Low
"Popular" (The Veronicas song) (2008), on the album Hook Me Up
"Popular" (Wicked song), in the musical Wicked
Popular, an unreleased album by Van Hunt
"Popular" a song by The Anchoress on the 2015 album Confessions of a Romance Novelist