There are actually different kinds of ambiguity:
This is a single word or term having more than one meaning in the language. For example, the word "deep" can mean profoundity ("What you have said is very deep."), or it can be used to describe physical depth ("This hole is very deep"). Similarly for words like "young" (inexperienced or young of age), "bank" (river bank or financial institution), etc. Referential ambiguity
It is not clear which thing or group is being referred to. This often arises when the context does not make it clear what a pronoun or quantifier is referring to. "Ally hit Georgia and then she started bleeding." Who is hurt? Ally or Georgia? "Everybody is coming to the party." Certainly "everybody" does not refer to every human being in the whole world. But then which group of people are we talking about? Of course in normal situations the speaker usually has some specific group of people in mind. Many people like to make very general statements, such as "All politicians are corrupt". Literally, this statement implies that there is no politician who is not corrupted. But of course we can think of many counterexamples to such a claim. So the person who makes the statement might say "I don't really...