Conformational isomer is a term that refers to a specific type of isomerism, which is a concept in chemistry that describes when different molecules have identical molecular formulas but differing arrangements of their atoms. Synonyms for the term conformational isomer would include structural isomer, stereoisomer, and configurational isomer. In all cases, these terms describe the variety of ways in which molecules can be arranged and still maintain the same chemical formula. When discussing conformational isomers, it is important to understand the difference between these synonyms and how they relate to broader concepts in chemistry. Nonetheless, all of these terms describe the same underlying phenomenon and help chemists communicate efficiently and clearly.