The words used as puns are SENTENCE and MANOR.
In literature, a pun is a play upon words to produce humorous effects (meaning, pronunciation, spelling). For example, in "atheism is a non-prophet institution" the word "prophet" is used instead of "profit".
In the first given sentence, the word "sentence" is used instead of "punishment".
In the second one, the word "manor" is used with the meaning of "manner".