Homographs vs Polysemy - What's the difference?

As nouns the difference between homographs and polysemy

is that homographs is while polysemy is (semantics) the ability of words, signs and symbols to have multiple meanings.

(head)

(wikipedia polysemy)

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(semantics) The ability of words, signs and symbols to have multiple meanings.

[...] polysemy , which is the greedy habit some words have of taking more than one meaning for themselves. , speech at TED.

* monosemy