* Want expresses a desire or wish.
* Won't is a contraction of "will not" and expresses refusal or unwillingness.
For example:
* Want: "I want a new car."
* Won't: "I won't go to the party."
While "require" doesn't have a direct homophone, it's worth noting that "require" can be replaced by "need" in some contexts. However, "need" and "needn't" are not perfect homophones as they have slightly different meanings.