"Many words in Korean have Chinese origin, so in that way, Korean and Chinese languages are similar. However, there are no tones in Korean like there are in Chinese."
While the majority of Korean words do, in fact, come from Chinese (i.e., Sino Korean words), the origin of the vocabulary does NOT make the languages similar. Grammar, pronunciation, morphological structures, etc. are wildly different despite being geographically close to one another. English vocabulary is largely made up of words from Latin/Greek but the grammatical and phonetic qualities are VERY different from one another. This was one of many reasons why the Korean alphabet was created since it was designed for the Korean language whereas Chinese characters are not!
Further, tones do exist in Korean (and all languages) - they just are not used to change the meaning of words the same way this is done in Mandarin and Cantonese (and other regional languages and dialects). Tones are used to mark surprise, questions, make statements, etc.