Verified answer

Orthodoxy generally means strict adherence to established norms and rules, typically very hidebound to the "letter of the law."

Conservatism generally means somewhat less strict adherence to same norms and rules, perhaps more of a interpretation of the "spirit of the law" rather than the "letter of the law."

Liberalism generally means less adherence to norms and laws, and "spirit of the law" may (or may not) even be too strict.

Usually these are discussed in terms of religion, in fact fairly specifically with Judaism, although they can be used in association with politics, too. You don't hear orthodoxy much in reference to politics, as it is usually subsumed (rightly or wrongly) in the concept "conservative."

The National Park Service has a core value that toes the line between conservatism and liberalism quite nicely: we honor tradition, we are proud of it, we learn from it, but we are not bound by it.

I hope this helps!