Difference between Improve and Tighten

IMPROVE vs TIGHTEN: VERB

To make (something) better; to increase the value or productivity (of something)
Get better
To make better

To make beneficial additions or changes.
To become better.
To increase the productivity or value of (land or property).
To raise to a more desirable or more excellent quality or condition; make better.
To increase; to be enhanced; to rise in value.
To advance or progress in bad qualities; to grow worse.
To make useful additions or amendments to, or changes in; to bring nearer to perfection.
To grow better; to advance or make progress in what is desirable; to make or show improvement.

To advance or increase by use; to augment or add to; -- said with reference to what is bad.
To use or employ to good purpose; to make productive; to turn to profitable account; to utilize
To make better; to increase the value or good qualities of; to ameliorate by care or cultivation.
To disapprove; to find fault with; to reprove; to censure.
To disprove or make void; to refute.

To increase; grow.
To grow better in any way; become more excellent or more favorable; advance in goodness, knowledge, wisdom, amount, value, etc.: as, his health is improving; the price of cotton improves daily.
To increase in force or amount; intensify in any respect.
To turn to advantage or account; use profitably; make use of: as, to improve an opportunity; to improve the occasion.
To make better; ameliorate the condition of; increase in value, excellence, capability, estimation, or the like; bring into a better, higher, more desirable, or more profitable state: as, to improve the mind by study; to improve the breeds of animals; to improve land by careful tillage.
To disprove; prove false; refute.
To approve; prove; test.
To disapprove; censure; blame.

To make tight; draw tighter; straiten; make more close in any manner; constrict.
To become tight; be drawn tighter.
Severely restrict in scope or extent
(transitive; intransitive verb) To make or become tight or tighter.

Elevate, Expand, Maximize, Streamline, Optimize, Reduce, Boost, Enhancing, Bolster, Strengthen, Enhance, Meliorate, Amend, Ameliorate, Better

Adjust, Bolster, Intensify, Tight, Improve, Restrict, Strengthen, Toughens, Toughen, Loosen, Tighten up, Reduce, Constrain, Fasten, Stiffen

Improvement, Elevate, Expand, Maximize, Streamline, Optimize, Reduce, Boost, Enhancing, Bolster, Strengthen, Enhance, Amend, Ameliorate, Better

Squeeze, Harden, Adjust, Bolster, Intensify, Tight, Improve, Restrict, Strengthen, Loosen, Tighten up, Reduce, Constrain, Fasten, Stiffen

We continuously seek to improve our global supply chain management, optimize our inventory assortment and upgrade our automated replenishment system to improve inventory turnover.
In order to improve their business, companies must listen to customer feedback and change what they do to improve customer loyalty.
Occupational psychologists aim to improve the satisfaction, wellbeing and readiness of ADF members in order to improve both individual and unit effectiveness.
In credit easing, a central bank purchases private sector assets to improve liquidity and improve access to credit.
This worksheet will help you improve your calculation speed as well as improve your math skills.
Through our unparalleled diagnostics and drug development capabilities, we provide insights and accelerate innovations to improve health and improve lives.
DOD can help improve the functionality and longevity of military equipment; improve auditing and budgeting; increase efficiency and reduce costs.
In addition, these elements are intentionally designed to increase engagement, improve outcomes, and improve retention and graduation rates.
We use cookies to improve user experience, personalize content delivery, and improve website navigation and performance.
Accounts payable software provides tools to help drive down costs, increase productivity, improve cash management and improve vendor relations.

Tighten web applications security for Apache Modsecurity is an Apache module whose purpose is to tighten the Web application security.
If a torque wrench is unavailable, finger tighten the spark plug, then use a plug wrench to tighten.
On the left side of the firearm, tighten the cap screw on firmly, but do not tighten all the way.
Have someone where you had your eyeglasses adjusted tighten the screws or purchase an eyeglass screwdriver set and tighten the screws regularly yourself.
Harness leg loops are easier to tighten, and pupils can often tighten their own, if not the case follow same procedure as waist belt.
Tighten the two screws using the screwdriver, do not over tighten.
Lastly tighten all clamps, and tighten the mounting base to clamp the unit in.
People are having to tighten their belts, so the government should tighten its belt too.
But maybe tighten up or atleast tighten your lip when commenting to me.
Tighten the bolts securely, but do not over tighten.