belittle vs talk down

belittle and talk down both are verbs.

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

As verbs, talk down is a hyponym of belittle; that is, talk down is a word with a more specific, narrower meaning than belittle:

belittle (verb)	talk down (verb)
lessen the authority, dignity, or reputation of	belittle through talk
express a negative opinion of	speak in a condescending manner, as if to a child
cause to seem less serious; play down	direct and control (the flight of an airplane during landing) via radio