Conservative: (in a political context)
Modern: favoring free enterprise (Failing Free Market), private ownership (Small Business), and socially traditional ideas (two genders, anti lgbtq, anti immigration).
Classic: (in a political context) favoring free enterprise, private ownership, and socially traditional ideas. - Yeah slavery falls into all of those categories.
Liberal 1. willing to respect or accept behavior or opinions different from one's own; open to new ideas (tolerance, but not a tolerance of intolerance.)
2. relating to or denoting a political and social philosophy that promotes individual rights (abolition, LGBTQ+), civil liberties (individual rights to personal happiness), democracy, and free enterprise.
We are not the same. If you need a more thoughtful analysis of then-and now conservatives of GOP today and GOP then, versus Democrats then and now, I can write you one. But let me assure you, the GOP of today is the Democrats of yesterday as the conservative ideology changed party.