Unwind vs Upwind - What's the difference?

As a verb unwind

is to wind off; to loose or separate; to untwist; to untwine; as, to unwind thread, to unwind a ball of yarn.

exposed to the wind.

in the direction from which the wind is blowing.

To wind off; to loose or separate; to untwist; to untwine; as, to unwind thread, to unwind a ball of yarn

Could you unwind about a foot of ribbon so I can finish the package?

(obsolete) To disentangle

* 1836 , , The Works of Richard Hooker , Volume 4, page 27:

... but being not so skilful as in every point to unwind themselves where the snares of glossing speech do lie to entangle them, ...

(slang) To relax; to chill out; as, to rest and relieve of stress

After work, I like to unwind by smoking a pipe while reading the paper.

To be or become unwound; to be capable of being unwound or untwisted.

(wikipedia upwind)

(en adjective)

exposed to the wind

(en adverb)

in the direction from which the wind is blowing

* downwind

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