There is no real difference. Its like asking people to define the difference between two sides of a coin; theyre both still the same thing.
The hard core of both parties both want the same things, they just arrive there by two different paths. They all want to determine who we can buy from or sell to, what we can buy, earn, what we can eat, drink, smoke, have sex with, and where we can do all these things and more.
Conservatives have their artificial creation we are all supposed to bow to called God, Liberals have their artificial creation we are all supposed to bow to called Society (in the sense of Society being something other than/greater than a collection of individuals). Conservatives will quote clergy, Liberals will quote philosophers. Conservatives will scoff at evolution while mouthing it in the context of free trade. Liberals will scoff at conservatives for rejecting evolution while launching into a bunch of hot air as to why science cant really ‘prove’ anything when questions about things like, oh, genetics come up.
Conservatives adhere to organized religon, Liberals adhere to secular religon. They both are chock full of pompus, self righteous assholes so deluded by their own egos that they think they know best how other people should live and what other people should value. Its like asking the difference between the taste of oranges from Cal as opposed to the taste of oranges from Flo. No matter the subtleties of taste, theyre still all fucking oranges.
To add to the cutsie little alegories, Liberals are cross dressers who only cross dress when other people are around. Conservatives are cross dressers who only cross dress when no one is around.
Or, conservatives will bend you over and fuck you. If you resist, the cops will hold you down. Liberals will try to talk you into bending over willingly. If that doesnt work, theyll shout to everyone else how unfair it is that your ass is still tight, and how anti-social it is of you to reject what others were willing to submit to. So your neighbors will hold you down.
Or, at an accident on the side of the road, conservatives will stop, get out and help, drive the person to a hospital, then send them a bill. Liberals will stop, start yelling that someone should call 911, and stand there with their thumb up their ass until the ambulance comes. If the person dies, its of course the fault of the ambulance for not getting there in time.