What is grammatical meaning of a word? Give an example to illustrate your point.

What is grammatical meaning of a word? Give an example to illustrate your point.

Grammatical meaning refers to that part of the meaning of the word which indicates grammatical concept or relationships such as part of speech of words, singular and plural meaning of nouns, tense meaning of verbs and their inflectional forms. For example, forget (base verb), forgets(3rd person singular form), forgot (past form), forgotten (present perfect form) and forgetting (progressive form).