The term "change of grammatical form" refers to a phenomenon in language where a word or sentence alters its structure or arrangement. Some synonyms for this phenomenon include grammatical transformation, syntactic modification, morphological variation, or semantic conversion. These changes are used in various contexts to convey different meanings or to adhere to different grammatical rules. This may involve altering the tense, voice, mood, or case of a word or sentence. Changes of grammatical form are a vital aspect of language, allowing speakers and writers to convey more complex and nuanced meanings in their communication.