The Word and the Phrase = the Same Thing
In the early days, Top 40 played whatever were the current hits. The weekly Top 10 might include Frank Sinatra and Little Richard. Smart programmers played Sinatra in the daylight and Little Richard after dark. Dayparting. Later came two versions of the same Hit record, the three-minute radio single and the seven-minute album version. The Album version of “Light My Fire” was hour-restricted. It wasn’t played in the hours with the heaviest commercial load.