Mobile phones used to be a separate market but the boundaries between them and music players are beginning to blur.
It's composed of several separate markets, which tend to merge.
Problems are caused also by the absence of information on overall operating performance in each separate market.
"There's danger in regulating as though there are separate markets."
There were always separate markets for country music and black pop.
High school senior portraits are considered a separate market altogether.
Limiting information is possible when trading occurs in separate markets.
With the changes, Japan will become a separate market; previously, it was part of the international operation.
Within this fertile stretch, there are essentially two separate markets, one served by each road.
"It used to be two separate markets, but it's becoming a single corporate bond market."