The term 'BILLBOARD LIST' refers to the Billboard music charts, which are a set of lists that rank the most popular songs in the United States. The two crossword solutions for this term are 'CHART' and 'TOPTEN', both of which refer to the different types of Billboard lists. The CHART solution is a five-letter word that refers to the main Billboard CHART, which ranks the top 100 songs in the US. The TOPTEN solution is a six-letter word that refers to the Billboard Top 10 CHART, which ranks the top 10 songs in the US.