The term "paraffin series" is commonly used in chemistry to describe a group of naturally occurring hydrocarbons with a specific chemical structure. However, there are several synonyms that can be used to refer to this group of substances. One commonly used synonym is "alkane series," which refers to the fact that these hydrocarbons are characterized by single bonds between carbon atoms. Another synonym is "saturated hydrocarbons," which relates to the fact that these compounds contain the maximum possible amount of hydrogen atoms and cannot undergo further reaction. Finally, the term "straight-chain hydrocarbons" is also used to describe this group of substances, as they contain a linear arrangement of carbon atoms.