Difference between Reduces and Undermines

REDUCES vs UNDERMINES: NOUN

A substance capable of bringing about the reduction of another substance as it itself is oxidized; used in photography to lessen the density of a negative or print by oxidizing some of the slackened silver
Pipefitting that joins two pipes of different diameter

Narrow or limit
Cook until very little liquid is left
Be the essential element
Lessen and make more modest
Make smaller
Make less complex
Bring to humbler or weaker state or condition
Cut down on; make a reduction in
Take off weight
Reposition (a broken bone after surgery) back to its normal site
Undergo meiosis
Simplify the form of a mathematical equation of expression by substituting one term for another
Be cooked until very little liquid is left
Reduce in size; reduce physically
To remove oxygen from a compound, or cause to react with hydrogen or form a hydride, or to undergo an increase in the number of electrons
Lessen the strength or flavor of a solution or mixture
Put down by force or intimidation
Reduce in scope while retaining essential elements
Third-person singular simple present indicative form of reduce.
Lower in grade or rank or force somebody into an undignified situation

Slim, Abbreviate, Subdue, Concentrate, Slenderize, Foreshorten, Repress, Quash, Tighten, Dilute, Trim, Simplify, Shrink, Cut, Shorten

Subverts, Distorts, Imperils, Hinders, Endangers, Erodes, Diminishes, Impedes, Jeopardizes, Cave, Countermine, Counteract, Sabotage, Subvert, Weaken

Thin, Subjugate, Abridge, Slim, Abbreviate, Subdue, Foreshorten, Quash, Tighten, Dilute, Trim, Simplify, Shrink, Cut, Shorten

Mine, Damages, Reduced, Prejudice, Decreases, Commits, Compromises, Restricts, Hurts, Threatens, Cave, Countermine, Counteract, Subvert, Weaken

This Excess Withdrawal reduces the Reference Value in the same proportion as it reduces the Contract Value.
This reduces the amount of heat absorbed into the building, so reduces energy needed to cool the building.
It reduces the amount of time for interest to compound, which reduces the total mortgage balance over time, Henninger says.
Current support reduces only if the language in the order specifies that it reduces when one of the children emancipates.
This also reduces blood circulation, reduces sebum production and depletes the lipid layer so the body loses natural oil.
This filter effectively reduces the amount of reflection that reaches the eye, and so reduces glare.
Instead, they proposed the government reduces its current spending and reduces the budget assigned to agencies.
Using the anaerobic digester reduces area truck trips substantially and reduces waste costs by millions of dollars.
This reduces the need for new or additional infrastructure and reduces costs across all levels.
Increased poverty reduces human capital and often creates political instability that reduces investment.

There was balancing material that undermines your conclusions.
Overcriminalization itself undermines public respect for criminal law.
And it undermines all of our service values.
How tracking undermines race equity in desegregated schools.
Manichaean ideology undermines the rational exercise of power.
The routine use of shackles undermines these objectives.
It undermines what this military stands for and it undermines what the Marine Corps stands for when sexual assault takes place within.
This of course undermines all historical writing, and, obviously, undermines the possibility of getting facts from the Gospels.
When that trust is breached it undermines these relationships, and undermines our investigations and the confidence of victims, witnesses and their families.
When poor communication undermines trust it also undermines the possibilities for optimal treatment and outcomes.