Word 1: Resign (re ZIGHN)
Meaning 1: To give (oneself) over without resistance.
Example Sentence: He resigned his cabinet job to spend more time with his family.

Meaning 2: To give up one’s office or position.
Example Sentence: He resigned as the principal of the school due to ill health.

Meaning 3: To accept something as inevitable.
Example Sentence: He resigned himself to her directions.

Word 2: re-sign (ree SIGHN)
Meaning: To sign again.
Example Sentence: He was re-signed after he had recovered from his injury.

Example Sentence using both words:
As she had been forced to resign, she agreed to join only after the director had re-signed the contract.