talk down vs denigrate

talk down and denigrate both are verbs.

Word	Noun	Adjective	Verb	Adverb
talk down	No	No	Yes	No
denigrate	No	No	Yes	No

As verbs, denigrate is a hypernym of talk down; that is, denigrate is a word with a broader meaning than talk down:

Other hypernyms of talk down include belittle, derogate, minimize.

talk down (verb)	denigrate (verb)
belittle through talk	cause to seem less serious; play down
speak in a condescending manner, as if to a child	charge falsely or with malicious intent; attack the good name and reputation of someone
direct and control (the flight of an airplane during landing) via radio