fluent vs smooth-spoken

fluent and smooth-spoken both are adjectives.

Word	Noun	Adjective	Verb	Adverb
fluent	No	Yes	No	No
smooth-spoken	No	Yes	No	No

As adjectives, fluent and smooth-spoken are synonyms defined as:

fluent and smooth-spoken: expressing yourself readily, clearly, effectively

Other synonyms of fluent include eloquent, facile, silver-tongued, silver.

fluent (adjective)	smooth-spoken (adjective)
expressing yourself readily, clearly, effectively	expressing yourself readily, clearly, effectively
smooth and unconstrained in movement