Industrious vs. Diligent: What's the Difference?

Industrious and Diligent Definitions
Industrious
Energetic in application to work or study.
Diligent
Marked by persevering, painstaking effort.
Industrious
(Obsolete) Skillful; clever.
Diligent
Performing with industrious concentration; hard-working and focused.
Scientists are very diligent in their work.
Industrious
Hard-working and persistent.
She was a very industrious student at school.
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Diligent
Prosecuted with careful attention and effort; careful; painstaking; not careless or negligent.
The judges shall make diligent inquisition.
Industrious
Given to industry; characterized by diligence; constantly, regularly, or habitually occupied; busy; assiduous; not slothful or idle; - commonly implying devotion to lawful and useful labor.
Frugal and industrious men are commonly friendly to the established government.
Diligent
Interestedly and perseveringly attentive; steady and earnest in application to a subject or pursuit; assiduous; industrious.
Seest thou a man diligent in his business? he shall stand before kings.
Diligent cultivation of elegant literature.
Industrious
Steadily and perseveringly active in a particular pursuit or aim; as, he was negligent in business, but industrious in pleasure; an industrious mischief maker.
Industrious to seek out the truth of all things.
Diligent
Quietly and steadily persevering especially in detail or exactness;
A diligent (or patient) worker
With persevering (or patient) industry she revived the failing business
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Industrious
Characterized by hard work and perseverance
Diligent
Characterized by care and perseverence in carrying out tasks;
A diligent detective investigates all clues
A diligent search of the files
Industrious
Working hard to promote an enterprise