I don't think I've ever seen those two words before.
But after poring over my American-USA dictionary, I think, in my humble, and tenative, opinion that your example is a: synecdoche.
My reasoning is: A businessman consists of: A man, his suit, his fancy watch, his fat wallet, his two-toned shoes, his business liquid lunches, etc.
So I ask my buddy, "How many suits have you arrested this week?"
Or I could have said, "How many two-tones have you arrested this week?"
That I think is similar to me asking a buddy of mine that owns houses, "How many roofs did you purchase this week?"
In my dictionary, as an example for synecdoche, it has: as a roof for a house.
synecdoche: a figure of speech where a part is put for a whole ...
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metonymy: A figure of speech that consists in the naming of a thing by one of its attributes, as "the crown prefers" for "the king prefers."
So, if I had a friend named Tom that was short, then I could say, "Tomorrow we'll give Tom the day off." Or I could say, "Tomorrow we'll give shorty the day off."
I think. But I could be wrong. This is not my field of expertise. Not even a hobby. Yeah, I'll admit it; I'm guessing.