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.

다스릴 략, approximately, roughly; outline (11)
槪略 개략 outline
計略 계략 stratagem
計略 계략 trick
機略 기략 resource
大略 대략 approximately
省略 생략 abbreviation
略語 약어 abbreviation
略字 약자 abbreviation
略號 약호 code
戰略 전략 strategy
政略 정략 politics
策略 책략 tactics
侵略者 침략자 aggressor
侵略的 침략적인 aggressive