Prepositions form meaningful relationships between the word before them (usually a verb or a noun) and the noun phrase after prepositions. The relationship they create depends on the words used and the context of the sentence. So, it can't really be said what these phrases mean because you're only providing the prepositional phrases, not the verb or noun they relate to. That said, we can discuss the types of relationships that prepositions tend to create, and sometimes different prepositions can create very similar relationships. Consider this: I made this this cake for you. I'm giving this cake to you. for: generally establishes a relationship about purpose, but has other uses as well to: is usually about movement of some kind in: is about containment in a boundary on: is about contact with surfaces. ...and so on. Look at the relationships "for" creates in the following sentence: I'm looking for medicine for my headache. The first use of for pairs with the verb, and determines its meaning - in this use 'look' means to search for something (the purpose of looking s to search). The second pairs with the noun medicine and tells us the purpose of the medicine - to stop my headache.

Grammatical Way:- Comes under Proposition. In a general way:- "For You" give a sense of "Offering" "To You" give a sense of "target or pointing toward something"