What is the term for words that are spelled alike and pronounced differently?

The term for words that are spelled alike but pronounced differently is homograph.

Here are some examples:

* Lead (present tense verb) - pronounced "leed"

* Lead (a heavy metal) - pronounced "led"

* Bow (to bend) - pronounced "bow"

* Bow (a knot) - pronounced "bow"

* Wind (air in motion) - pronounced "wind"

* Wind (to turn) - pronounced "wind"