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Full Idea
One sense of 'reduction' is eliminative, in getting rid of a phenomenon by showing that it is really something else (as the earth's rotation eliminates 'sunsets'), but another sense does not get rid of it (as in the explanation of solidity by molecules).
Gist of Idea
Reduction is either by elimination, or by explanation
Source
John Searle (The Mystery of Consciousness [1997], Ch.2)
Book Ref
Searle,John R.: 'The Mystery of Consciousness' [Granta 1997], p.29
A Reaction
These are bad analogies. You can't 'eliminate' a sunset - you just accept that the event is relative to a viewpoint. If we are discussing ontology, we will not admit the existence of sunsets, but we won't have an ontological category of 'solidity' either.