Lexical ambiguity is contrasted with semantic ambiguity.
From the en.wikipedia.org
Some languages have been created with the intention of avoiding ambiguity, especially lexical ambiguity.
From the en.wikipedia.org
The lexical ambiguity of a word or phrase contains in its having more than one meaning in the language to which the word belongs.
From the en.wikipedia.org
It has been speculated that because speech-associated gestures could possibly reduce lexical or sentential ambiguity, comprehension should improve in the presence of speech-associated gestures.