Problem: Sentence1: A bad reaction to the medicine.
Sentence2: The forces of reaction carried the election.
Q: Does the term reaction mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: A mother's love is not easily shaken.
Sentence2: The theater was her first love.
Q: Does the term love mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: Sublime iodine.
Sentence2: Some salts sublime when heated.
Q: Does the term sublime mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: 200 head of cattle.
Sentence2: A reduction in the assessment per head of sheep.
Q: Does the term head mean the same thing in both these sentences?

Answer:
the same meaning