Q: Sentence (1) Our advertisements reach millions.
Sentence (2) The sunlight reached the wall.. Word: reach.
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A: different meanings

Q: Sentence (1) Don't go outside wearing just a t-shirt; you'll freeze!
Sentence (2) The water in the bowl froze.. Word: freeze.
==--==
A: different meanings

Q: Sentence (1) She could not help watching the sad spectacle.
Sentence (2) I can't help myself -- I have to smoke.. Word: help.
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A:
the same meaning