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.

나타날 현, 지금 현, 옥빛 현, appear, manifest, become visible (11)
實現 실현 materialization
自然現象 자연현상 natural phenomena
再現 재현 reappearance
再現 재현 reproduction
體現 체현 personification
超現實主義 초현실주의 surrealism
出現 출현 appearance
出現 출현 arrival
表現 표현 expression
表現 표현 presentation
the present, the existence, actuality
現金 현금 cash
現金 현금 ready money
現金 현금 cash, ready funds, not a credit card
現代 현대 modern times
現代 현대 nowadays
現代人 현대인 contemporary/modern man
現代的 현대적 modern
現象 현상 phenomenon
現實 현실 reality
現實的 현실적 down to earth, realistic
現實化 현실화 realization
現場 현장 on site, on location
現在 현재 present
現存 현존하는 existing
現地 현지 current location