What is the difference between Whose and Who's?

Whose is a determiner as to something that belongs to a person, as in "whose car is at the end of the street?" or "Whose sandwich is that?" The words "whose" and "who's" are homophones in that they sound the same, but they are spelled differently and have different meanings.

Who's, is a contraction, which means "who has" or "who is." An example would be "who's in the next room?" and" Who's that person eating my sandwich?"

Writers, students, and a variety of people encounter difficulty in the usage of these two words that sound so similar but differ in function and meaning. “Who's” and “whose” come from the pronoun “who,” while who's is two words join together (i.e. "who is" or "who has"), whose is rather possessive (i.e., it is used in asking or saying to whom something belongs to).

The apostrophe in who's represent a word that has been omitted in a bit to make pronunciation faster and easier: imagine saying " I do not know who is on the other side of the road," it sounds rather somehow to the hearing but when the apostrophe is applied it makes more sense. Whose, as acknowledged earlier, is a possessive pronoun; it is used in questions to ask who or what something belongs to. For example, whose car is that on the other side of the road? It's just that simple!