The word Racist is generally used to discribe something or someone.
In the case of an object (something not someone) the word is used to describe an object that is
insensitive towards any specific group of ethnic origin and/or incorrectly representing said group (aka
cultural appropriation, or using insensitive sterotypes).
In the case of an individual it is used to describe their actions and/or words being discrimatory, degrading, and/or targeting any specific group of ethnic origin.
However in terms of people there are 2 kinds of racist.
First being intentional with the knowledge that what they're saying is hurtful, degrading, and/or discriminatory towards any particular group of ethnic origin.
Second being unintentional due to either a lack of exposure to different cultures, and/or ignorance due to a poor education or a
lack thereof (but if they continue to repeat whatever it is they said or did after being corrected they turn into the first kind).
Example:
(Person)
"Timmy is white and he says
the N-word, he is (definitely) a racist"
"Ron grew up in
the countryside, it's not his fault he's racist"
(Object)
"this
statue is incredibly racist"
"That sign is quite racist"