In the context of Germany, “liberal” means being for capitalism unbridled by the state but still generally progressive policies culturally, with more rights for minorities and such. And corresponding party is FDP. Someone considered “left” would be for more social policies and government control of capitalism (traditionally SPD), extreme left would be following tenants of communism, opposed to the US and friendly with Russia (The party The Left and the new Sarah Wagenknecht party) Someone considered conservative or “right” would be against social policies and try to reduce control of capitalism (CDU) extreme right would be plain fascists (AfD), ironically also aligned with Russia now. The Greens are a special case, since they were originally a single issue party comcerned with environmentalism, but since the SPD has largely vacated their social policies since Schröder was chancellor, they have become more and more the new “social” party.