This is the 96th most frequent Urdu word.
خود
"خود" means "self" or "oneself" in English.
In this case, 'خود' indicates that the action was performed independently by the person mentioned.
وہ خود ہی وہاں چلا گیا۔
He went there by himself.
Here, 'خود' is part of reflecting personal responsibility or self-directed action.
ہمیں اپنی عزت خود کرنی چاہیے۔
We should respect ourselves.
Here, 'خود' emphasizes that the subject completed the work personally.