price reduction vs reduction

price reduction and reduction both are nouns.

Word	Noun	Adjective	Verb	Adverb
price reduction	Yes	No	No	No
reduction	Yes	No	No	No

As nouns, reduction is a hypernym of price reduction; that is, reduction is a word with a broader meaning than price reduction:

Other hypernyms of price reduction include decrease, diminution, step-down.

price reduction (noun)	reduction (noun)
the act of reducing the selling price of merchandise	the act of decreasing or reducing something
	the act of reducing complexity
	any process in which electrons are added to an atom or ion (as by removing oxygen or adding hydrogen); always occurs accompanied by oxidation of the reducing agent