60% of Korean words are derived from Chinese loan words. Learning to read and write Chinese characters is not necessary for most Korean students given that they are used infrequently in modern Korean texts but learning the sound and meaning of the characters will help you improve your vocabulary similar to how students of English can benefit from learning Latin and Greek roots.

범할 침, 침노할 침, 습격할 침, 흉작 침, invade, encroach upon, raid (9)
다스릴 략, approximately, roughly; outline (11)
과녁 적, 꼭 그러할 적, 밝을 적, possessive, adjectival suffix (8)
侵略的 침략적인 aggressive