Just because both liquor and liqueur contain alcohol and both start with ‘L’ doesn’t mean they are the same things. Most people think a liqueur contains less alcohol, but that actually is not a defining barrier. Liqueurs can have alcohol contents ranging from 30 proof to 110 proof. Liqueurs and sweetened spirits flavored with various extracts, cream, fruit, nuts or oils.
Liquors are things like vodka, gin, rum and the other liquors that are more basic. These liquors can serve as the base for liqueurs.