silver-tongued vs smooth-spoken

silver-tongued and smooth-spoken both are adjectives.

Word	Noun	Adjective	Verb	Adverb
silver-tongued	No	Yes	No	No
smooth-spoken	No	Yes	No	No

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

silver-tongued and smooth-spoken: expressing yourself readily, clearly, effectively

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

silver-tongued (adjective)	smooth-spoken (adjective)
expressing yourself readily, clearly, effectively	expressing yourself readily, clearly, effectively