Korean particles are small words that attach to nouns to indicate their grammatical function in a sentence. They help clarify the relationships between words, such as the subject, object, or location. Common particles include 이/가 for the subject, 을/를 for the object, and 에/에서 for location. These particles are essential for understanding the meaning of sentences in the Korean language. Unlike English, where word order is crucial, Korean relies heavily on these particles to convey the correct context. Mastering them is key to achieving fluency and comprehension in Korean.