Question

football as an adjective

Answer 1

While you may be tempted to identify football as a noun (which it most often is), closer inspection reveals that football is actually describing the jersey, telling us what kind of jersey it is, which therefore makes football an adjective. 

Answer 2

While you may be tempted to identifyfootball as a noun (which it most often is), closer inspection reveals thatfootball is actually describing the jersey, telling us what kind of jersey it is, which therefore makes football anadjective. In this case, your is actually an adjective, but we'll get to that later.
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