Q: Sentence (1) When the weather is warm, the snowman will disappear; he will melt.
Sentence (2) Melt butter.. Word: melt.
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A: the same meaning

Q: Sentence (1) During his first year in office.
Sentence (2) He rented an office in the new building.. Word: office.
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A: different meanings

Q: Sentence (1) The world's foremost authority on orangutans.
Sentence (2) I have the authority to penalise the staff in my department, but not the authority to sack them.. Word: authority.
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A:
different meanings