There is a difference.

A lot of people who claim to be liberal, just aren’t left wing. The good example is the FDP party in Germany.

To quote Wikipedia: The FDP’s political position has variously been described as centrist, centre-right, and right-wing. The FDP has been described as liberal, conservative-liberal, classical-liberal, and liberal-conservative. Other sources have described the party as libertarian or right-libertarian.

There are left wing liberals, but don’t act like they usually call themselves liberal.