Function Word

I have come to see you ( have is function word)
I have three apple ( have is content word (full verb)
One has one's principles (one is function word) pronoun
I have one apple  ( One is content word ) Numeral
I have no more money ( no is a function word ) a negative particle
No i am not coming ( no is a content word ) Yes no answer

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a form of words to be or to have or modals words that tell relation to other words



words that tie clauses together ( and , so but , however
words that give detail to nouns a , an, the
words that replace nouns , i, it they ,we , he she,