Panrat T, Yanasugondha V. A Corpus-based Study of English Synonyms Clear, Obvious, Apparent, and Evident: Implications for ELT. LEARN [Internet]. 2024 Jan. 31 [cited 2024 May 13];17(1):162-87. Available from: https://so04.tci-thaijo.org/index.php/LEARN/article/view/270381