My bad. I meant to say, i looked up "Conservative" in a thesaurus, not Right Wing:
Conservative [n] person who is cautious, moderate; an opponent of change
bitter-ender, classicist, conserver, conventionalist, diehard, hard hat, middle-of-the-roader, moderate, moderatist, obstructionist....and so on.
Liberal [adj] (no entry for noun) progressive
advanced, avant-garde, broad, broad-minded, cathoic, enlightened, flexible, free, general, high-minded, humanistic, humanitarian, indulgent, intelligent, interested, latitudinarian, left, lenient, libertarian, loose, et al.
Straight from, Roget's 21st Century Thesuaurus, 2nd Edition, ISBN: 0-440-23513-8
So now, moderates and conservatives are one in the same.....go figure? I guess your definition indeed HASN'T 'always' been the definition.