Difference between Useful and Effective

USEFUL vs EFFECTIVE: NOUN

A soldier fit for duty.
That which produces a given effect; a cause.
One who is capable of active service.
Specie or coin, as distinguished from paper currency; -- a term used in many parts of Europe.
The serviceable soldiers in a country; an army or any military body, collectively.
The number of men actually doing duty, or the strength of a company, a regiment, or an army, in the field or on parade.
A soldier or a piece of military equipment that is ready for combat.

Having a practical or beneficial use.
Full of use, advantage, or profit; producing, or having power to produce, good; serviceable for any end or object; helpful toward advancing any purpose; beneficial; profitable; advantageous.
Being of practical use.
Having a beneficial use; serviceable.
Having a useful function
Being of use or service
Of great importance or use or service
Capable of being turned to use or account

Producing a strong impression or response; striking.
Works well as a means or remedy
Producing or capable of producing an intended result or having a striking effect
Exerting force or influence
Able to accomplish a purpose; functioning effectively
Existing in fact; not theoretical; real
Equipped and ready for service
Having an intended or expected effect.
Ready for service
Actually in effect.
Efficient, serviceable, or operative, available for useful work.
Producing a decided or decisive effect.
Having the power to produce a required effect or effects.
Having the power to produce an effect or effects; producing a decided or decisive effect; efficient; serviceable; operative
Prepared for use or action, especially in combat.
Existing in fact; actual.
Operative; in effect.

Being of use, advantage, or profit; valuable for use; suited or adapted to a purpose; producing or having power to produce good; beneficial; profitable; serviceable.
Useful invention.

Real
Not theoretical
Existing in fact
Functioning effectively
Able to accomplish a purpose
Serving to effect the intended purpose; producing the intended or expected effect or result; operative; efficacious: as, an effective cause; effective proceedings.
Capable of producing effect; fit for action or duty; adapted for a desired end: as, the effective force of an army or of a steam-engine is so much; effective capacity.
Serving to impress or affect with admiration; producing a decided impression of beauty or a feeling of admiration at the first presentation; impressive; striking; specifically, artistically strong or successful: as, an effective performance; an effective picture.
Actual; real.

Recyclable, Multipurpose, Reusable, Reclaimable, Utilizable, Utile, Utilitarian, Serviceable, Functional, Useable, Usable, Practical, Important, Valuable, Helpful

Hard hitting, Telling, In effect, Impelling, Trenchant, Actual, Operative, Existent, Operational, Impressive, Good, Competent, Effectual, Efficacious, Efficient

Recyclable, Multipurpose, Reusable, Reclaimable, Utilizable, Utile, Utilitarian, Serviceable, Functional, Useable, Usable, Practical, Important, Valuable, Helpful

Hard hitting, Telling, In effect, Impelling, Trenchant, Actual, Operative, Existent, Operational, Impressive, Good, Competent, Effectual, Efficacious, Efficient

Get useful insights to help make better decisions.
This option is only useful to Guix developers.
Three additional categories of area formulas are useful.
They identify the useful energy forms and the desired output of the device, and the forms that are not useful for the intended use.
Useful Summation Formulas We can use the notation to indicate useful formulas that we will have occasion to use.
This is useful for maintaining correct release times for software and is particularly useful in conjunction with the MKS Make software development facility.
As always, if you find this article useful then others may find it useful too.
The guide is quite useful, and has useful pictures accompanying the text.
Gems of Useful Knowledge Life hacks, practical tips and overall useful information.
Please provide examples of how they are useful or not useful.

This new system will be effective upon publication.
Designed and developed effective databases as per instructions.
IKEA property, including our parking lots, effective immediately.
Definition of Effective Interest Rate The effective interest rate is the true rate of interest earned.
Any changes to the compensation of Originator are effective for covered transactions that are locked by Norcom the specified effective date of the changes.
An agricultural lien is perfected when it becomes effective if the applicable requirements are satisfied before the agricultural lien becomes effective.
HIV care and support services and effective system for medication delivery creates a very efficient and effective service delivery mechanism for this initiative.
The impact on effective project delivery due to increased congestion, higher demand for service, and declining revenues on effective project delivery cannot be ignored.
For the avoidance of doubt, this Release Agreement shall become effective on the Excess Distribution Date, and not the Final Effective Date.
Commission determined that key components included prioritization of civil rights, effective methods to determine compliance, and effective enforcement techniques.