Difference between Useful and Preferable

USEFUL vs PREFERABLE: NOUN

Something which is to be preferred; any object or course of action which is more desirable than others.

Capable of being turned to use or account
Being of use or service
Having a useful function
Having a beneficial use; serviceable.
Being of practical use.
Of great importance or use or service
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 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.

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

Better, Preference, Wise, Recommended, Useful, Helpful, Appropriate, Favored, Rather, Beneficial, Advisable, Prefer, Advantageous, Preferred, Desirable

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

Better, Preference, Wise, Recommended, Useful, Helpful, Appropriate, Favored, Rather, Beneficial, Advisable, Prefer, Advantageous, Preferred, Desirable

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.

Either might be preferable for a specific story.
Portrait orientation is preferable to landscape, where possible.
Preferable to have experience in Maps API integration.
Loss of control may be the preferable defence.
For you the employee, lump sums are preferable.
Blue or black ink is preferable for endorsements.
It is preferable that they have written policies.
However, on a practical level, English is preferable.
Not only is using EBIT in place of EBITDA preferable from a conceptual standpoint, it is also preferable from a historical return standpoint.
It should recognize the fact that bigger cash flows are preferable to smaller once and early cash flows are preferable to later ones.