Q: Sentence (1) There is a narrow line between sanity and insanity.
Sentence (2) Toe the line.. Word: line.
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A: different meanings

Q: Sentence (1) The preachers and the bootleggers found they had a community of interests.
Sentence (2) They hoped to join the NATO community.. Word: community.
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A: different meanings

Q: Sentence (1) Matters came to a head yesterday.
Sentence (2) The head of the column advanced boldly.. Word: head.
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A:
different meanings