pour cold water on vs throw cold water on

pour cold water on and throw cold water on both are verbs.

Word	Noun	Adjective	Verb	Adverb
pour cold water on	No	No	Yes	No
throw cold water on	No	No	Yes	No

As verbs, pour cold water on and throw cold water on are synonyms defined as:

pour cold water on and throw cold water on: be discouraging or negative about

pour cold water on (verb)	throw cold water on (verb)
be discouraging or negative about	be discouraging or negative about