Content words are words that carry significant meaning in a sentence. They include nouns, verbs, adjectives, and adverbs, which help convey the main ideas and details. For example, in the sentence "The dog runs quickly," both "dog" and "runs" are content words that provide essential information about the subject and action. In contrast to function words, which include prepositions, conjunctions, and articles, content words are crucial for understanding the core message. They help listeners and readers grasp the context and specifics of what is being communicated. For instance, in the phrase "The beautiful garden blooms," "beautiful" and "garden" are content words that enhance the description.