Q: Does the word "reaction" mean the same thing in "The forces of reaction carried the election." and "In this reaction, the acid and base will neutralize each other, producing a salt."?

A: different meanings

Q: Does the word "authority" mean the same thing in "Authority for the program was renewed several times." and "He is an authority on corporate law."?

A: different meanings

Q: Does the word "set" mean the same thing in "His instructions deliberately gave them the wrong set." and "A set of tools."?

A: different meanings

Q: Does the word "be" mean the same thing in "I shall be writing to you soon." and "We liked to chat while we were eating."?

A:
the same meaning