The word "inflexional" refers to the changes that words undergo to denote different grammatical categories. Synonyms for this word include inflectional, grammatical, morphological, and declensional. These words describe the same concept, but offer a variety of ways to communicate it. Similarly, words such as variation, modification, and alteration can also be used to convey similar ideas. Depending on the context, certain synonyms may be more appropriate and effective than others. For example, if discussing a particular language's inflectional system, using the term grammatical might be more appropriate. Nonetheless, all of these words share the essential meaning of expressing the modifications that affect the form of words in a language.