browbeat vs coax

browbeat is not a noun while coax is a noun.

Word	Noun	Adjective	Verb	Adverb
browbeat	No	No	Yes	No
coax	Yes	No	Yes	No

As verbs, coax is a hypernym of browbeat; that is, coax is a word with a broader meaning than browbeat:

browbeat: discourage or frighten with threats or a domineering manner; intimidate
coax: influence or urge by gentle urging, caressing, or flattering

Other hypernyms of browbeat include blarney, cajole, inveigle, palaver, sweet-talk, wheedle.

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

browbeat (verb)	coax (verb)
discourage or frighten with threats or a domineering manner; intimidate	influence or urge by gentle urging, caressing, or flattering
be bossy towards