Problem: Sentence1: He bought a hot dog and a coke at the bar.
Sentence2: The boat ran aground on a submerged bar in the river.
Q: Does the term bar mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: A nice line of shoes.
Sentence2: Toe the line.
Q: Does the term line mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: They developed a scheme of mutual support.
Sentence2: The government provides support to the arts in several ways.
Q: Does the term support mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: The sweat cut little rivulets into her face.
Sentence2: Cut trenches.
Q: Does the term cut mean the same thing in both these sentences?

Answer:
the same meaning