what is difference in AM and ARE

in simple present tense we use "am" only for " i " , and we, they, you, and plural thing we use "are" and he, she, it, this and singular we use " is " for example: i am a scientist , this is a car , he is a boy they are good boy , like this we can use is , are , am

"Am" is used only for "I". Ex :- I am a student. I am going to market. "Are" is used when the subject is plural. It is also used with "You". Ex :- You are a student. They are playing football.

"Am" is used for only "I" in simple present tense whereas, "are" is used for "we, you, they." "Is" is used for "he, she and it" in simple present tense.