For a school I am applying to you have to play an insturment. I narrowed my choices down to guitar and violin. I want to play guiar cuz u can play all different kinds of music on it, but I want to play Violin since it looks so much more different and not your everyday insturment (a lot of ppl play guitar.)
What do you think?
If you are willing to spend a lot of time and money you should learn the violin. You'll need to get a private teacher if you want to play, as it is impossible to play it correctly without one. And if you have good self discipline and perseverance thats a plus – cause if you stop playing it then you'll forget it. It's the more difficult instrument that takes years of instruction to perfect, since your fingers have to be EXACTLY on one exact place on the fingerboard or it will be the wrong note, unlike the guitar since it has frets. But it is a beautiful thing to learn and is very unique. If you like working in a team then pick this the violin is played in an orchestra when you are young. Violin players usually play classical/folk/jazz music.
The guitar is more casual, I guess you could say. It's easier to play as you don't have to play every single note like in the violin, and has frets to guide you. It's optional, but you can take about 6 months of lessons or instruction for the basics, and a guitar book will help you after that because its easy to learn on your own. It's also a good instrument to play at parties or with friends although you usually play it alone as there is no "orchestra" for it. Guitar players usually play rock/pop/contemporary music.
You decide which instrument is best suited to your interests 
I love both of them.