Problem: Sentence1: A figure of $17 was suggested.
Sentence2: The area covered can be seen from Figure 2.
Q: Does the term figure mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: They are up to date.
Sentence2: We haven't heard from them to date.
Q: Does the term date mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: The surprise attack was devastating.
Sentence2: Imagine my surprise on learning I owed twice as much as I thought I did.
Q: Does the term surprise mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: A grain of salt.
Sentence2: A grain of sand.
Q: Does the term grain mean the same thing in both these sentences?

Answer:
the same meaning