Noun
One of two or more words (commonly words of the same language) which are equivalents of each other; one of two or more words which have very nearly the same signification, and therefore may often be used interchangeably. See under Synonymous.
Source: Webster's dictionaryGreatness is so often a courteous synonym for great success. Philip Guedalla
No synonym for God is so perfect as Beauty. Whether as seen carving the lines of the mountains with glaciers, or gathering matter into stars, or planning the movements of water, or gardening - still all is Beauty! John Muir
Google is not a synonym for research. Dan Brown
Observe, in politics, that the term extremism has become a synonym of "evil," regardless of the content of the issue (the evil is not what you are extreme about, but that you are "extreme"-i. e., consistent). Ayn Rand
A synonym is a word you use when you can't spell the word you first thought of. Burt Bacharach
Violation is a synonym for intercourse. Andrea Dworkin