A person or a place is hick if they are not sophisticated, and are probably in a rural area.
An ice pick is a tool with a pointed end that you use for breaking up a large block of ice into small chunks that you can put in your drink.
You kick something when you hit it with your feet. A lot of sports are played by kicking a ball.
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A mechanic is someone who uses tools to fix machinery. There are many different types of mechanic, but the kind that is most commonly associated with the word is an auto mechanic - someone who fixes cars.
A mosaic is a picture made from lots of tiny colored pieces. Traditionally, mosaics were made from pieces of tile, stone or glass. Modern mosaics can be made from photographs.
Music is art made of sound. Music is usually very pleasant, and is made by combining sounds from musical instruments.