Both. A homonym is a word that sounds the same as another but may be spelled differently. In either case, both words have different meanings. A homograph is a word that is spelled the same as another but has a different meaning. "Duck," meaning a waterfowl very capable in its early youth of imprinting upon a nurturer of another species, and "duck" meaning "Look out below!" fits both categories.
Homograph
homophone
Idiom Homograph Homophone Idiom Simile Homophone Homophone Idiom Homophone Idiom Simile Homograph Simile Homophone Simile
Homophone: "Summer" Homograph: "Bow" (as in bow tie or bow and arrow)
"Choose" is a homograph, as it has the same spelling but different meanings when pronounced differently. It is not a homophone or homonym.
Homograph or a homoglyph
"Content" is a homograph.
Yes, a homophone can be a homograph. For instance "desert" is a homophone for "dessert" when desert has the meaning of abandon. Desert is also a homograph when it means both abandon, and a dry place.
it's a homograph
There isn't one, bureau is a homograph.
The homograph of "a piece of hair" is "a peace of hair."
Duck as in a bird. Duck as in to crouch down to avoid something.