TOO: "Too" as an adverb is used: * after mentioning another person, thing, or aspect that a previous statement applies to or includes. "Nice to talk to you. "Nice to talk to you too." "I've got a great feeling about it." " Me too." * after adding a piece of information or a comment to a statement, in order to emphasize that it is surprising or important. "We did learn to read, and quickly too." * at the end of a sentence to emphasize an opinion that you have added after a statement made by you or by another person. "That money's mine." "Of course it is, and quite right too." * in order to indicate that there is a greater amount or degree of something than is desirable, necessary, or acceptable. "Leather jeans that are too big will make you look larger." "Eggs shouldn't be kept in the fridge, it's too cold." * with a negative to make what you are saying sound less forceful or more polite or cautious. (=very) "I wasn't too happy with what I'd written so far."

Hello Rohan, TO: Is a preposition that is used : * when indicating the place that someone or something visits, moves towards, or points at. "Two friends and I drove to Florida during college spring break." * If you go to an event, you go where it is taking place. "We went to a party yesterday." * If something is attached to something larger or fixed to it, the two things are joined together. "There was a piece of cloth tied to the dog's collar." * when indicating the position of something. For example, if something is to your left, it is nearer your left side than your right side. "Atlanta was only an hour's drive to the north." * When you give something to someone, they receive it. " Firms should be allowed to offer jobs to the long-term unemployed at a lower wage." * when indicating someone's reaction to something or their feelings about a situation or event. For example, if you say that something happens to someone's surprise you mean that they are surprised when it happens. * as a way of introducing the person or organization you are employed by, when you perform some service for them. "Rickman worked as a dresser to Nigel Hawthorne." * If someone goes from place to place or from job to job, they go to several places, or work in several jobs, and spend only a short time in each one. "Larry and Andy had drifted from place to place."

'TO' is a preposition/ adverb which connects/ gives relation of one word to its object, while the word 'TOO' simply means the same as 'also' e.g. 1) I want TO eat cake 2) I love you TOO