英和和英

語源

From sub- +‎ chart.

名詞

subchart (複数形 subcharts)

1. A secondary chart.
   • 2017 May 23, Gavin Haynes, “Why BTS are the K-pop kings of social media”, in The Guardian‎^[1]:

     In an age when the charts have become an algorithmic spaghetti of streaming plays, radio and downloads, the purest way of measuring who is up and who is down in pop might be the Billboard Social 50, a sub-chart that measures reach across social networks.