A stream of warm air vs A warm stream of air

Hi everybody,

Can someone please tell me if there are any differences between the 2 structures: "a stream of warm air" and "a warm stream of air"?

I'm really confused by them. For example: I can't see any differences between the 2 following sentences:

_ Hold the specimen in a stream of warm air from a heat gun.

and

_ Hold the specimen in a warm stream of air from a heat gun.

Thank you very much.