worship: showing respect and values for god
Prayer : words of praise thanks or sorrow etc offered to God
Chrisians believe that only god should be worshipped because he is the only worthy one.
Worship can be shown in many diffrent ways. for example offering praise to god, or doing what god wants out of obedience and love of him.
Prayer is one major for of worship, because it is directly speaking to god in a some what conversation.
For some believers they think silence in gods presance is the best form of worship. this is some timescalled meditation PG 81