coax vs sweet-talk

coax is a noun but sweet-talk is not a noun.

Word	Noun	Adjective	Verb	Adverb
coax	Yes	No	Yes	No
sweet-talk	No	No	Yes	No

As verbs, coax and sweet-talk are synonyms defined as:

coax and sweet-talk: influence or urge by gentle urging, caressing, or flattering

Other synonyms of coax include blarney, cajole, inveigle, palaver, wheedle.

coax (noun)	sweet-talk (noun)
a transmission line for high-frequency signals

coax (verb)	sweet-talk (verb)
influence or urge by gentle urging, caressing, or flattering	influence or urge by gentle urging, caressing, or flattering