To help you defien the two let's use wikipedia:Wikipedia says" A marketplace is the space, actual, http://wiki.answers.com/wiki/Virtual_(computing) or metaphorical, in which a...
Eddie Mooney cause his hair needs a wash cause he's a scruff
Teenagers and adolescence would be their target, as you see them the most with a Nike soccer ball.
McDonald's mostly target adults/teens looking for a quick meal and families with young children (Which is why they are making the Happy Meals healthy)