Q: Sentence (1) Stream of consciousness.
Sentence (2) A stream of people emptied from the terminal.. Word: stream.
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A: different meanings

Q: Sentence (1) Seek happiness.
Sentence (2) Seek a position.. Word: seek.
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A: the same meaning

Q: Sentence (1) A flexor, which bends a part, is the antagonist of an extensor, which extends it.
Sentence (2) When bending the elbow the triceps are the antagonist.. Word: antagonist.
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A:
the same meaning