Pronouns are words used in place of nouns to avoid repetition or to refer back to a previously mentioned noun. They streamline language by replacing specific nouns with more general terms like “he,” “she,” “it,” “they,” “we,” and “you.” Pronouns benefit learning English by making communication more efficient and concise. They simplify sentence structure, enhance readability, and encourage fluency by allowing speakers and writers to convey ideas without constant repetition of nouns. Moreover, mastering pronouns helps learners understand sentence cohesion and develop a deeper understanding of grammar rules, leading to improved writing and speaking skills in English.