Different between the standard field and custom field

Standard system generated field while creating object

     1. Created By
     2. Last Modified By
     3.Owner
     4.Name


Different Between custom field and Standard Field

S.No	Custom Fields	Standard Fields
1	Possibility to Change Label	yes
2	Possibility to change the API Name	No
3	Possibility to change the Data Type	No
4	Add Help Text	Yes
5	Add or Remove the picklist Value	Yes