deduction vs decrease

deduction and decrease both are nouns.

Word	Noun	Adjective	Verb	Adverb
deduction	Yes	No	No	No
decrease	Yes	No	Yes	No

As nouns, decrease is a hypernym of deduction; that is, decrease is a word with a broader meaning than deduction:

Other hypernyms of deduction include diminution, reduction, step-down.

As nouns, decrease is a hypernym of deduction; that is, decrease is a word with a broader meaning than deduction:

Other hypernyms of deduction include diminution, reduction, step-down.

deduction (noun)	decrease (noun)
the act of subtracting (removing a part from the whole)	the act of decreasing or reducing something
the act of reducing the selling price of merchandise	the amount by which something decreases
reasoning from the general to the particular (or from cause to effect)	a change downward
something that is inferred (deduced or entailed or implied)	a process of becoming smaller or shorter
an amount or percentage deducted
a reduction in the gross amount on which a tax is calculated; reduces taxes by the percentage fixed for the taxpayer's income bracket

deduction (verb)	decrease (verb)
	decrease in size, extent, or range
	make become smaller