Ambigulity

Ambiguity occurs when something is open to more than one interpretation. Ambiguity is possible in literature, ideas, statements, arts, music, and math. At times, ambiguity is reliant on context; something can be ambiguous in one situation while unambiguous in another. For example, consider the short phrase, “I read the book.” This sentence alone could refer to the present or the past, as the word “read” in English is spelled the same way in the present and past tenses. However, if we change the sentence to “I read the book when I was 7,” that clears up the ambiguity and places the context in the past tense.

Examples of Ambiguity

We experience ambiguity on a daily basis, whether in ordinary language and conversation, or while watching politicians or comedians. Here are some simple sentences that have more than one possible interpretation:

• The bark was painful. (Could mean a tree’s bark was rough or a dog’s bark communicated pain or hurt the listener’s ears).
• You should bring wine or beer and dessert. (Could mean that you must bring just wine, wine and dessert, or beer and dessert).
• Harry isn’t coming to the party. Tell Joe that we’ll see him next week. (The “him” could refer either to Harry or to Joe).

Reference :
http://www.literarydevices.com/ambiguity/