Problem: Sentence1: Sanitize a document before releasing it to the press.
Sentence2: Sanitize the language in a book.
Q: Does the term sanitize mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: This project is his baby.
Sentence2: Stand up for yourself-don't be such a baby!
Q: Does the term baby mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: Dig salt.
Sentence2: Dig coal.
Q: Does the term dig mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: He played a shtik Beethoven.
Sentence2: Play it straight with no shtik.
Q: Does the term shtik mean the same thing in both these sentences?

Answer:
different meanings