Difference between Extensive and Copious

EXTENSIVE vs COPIOUS: ADJECTIVE

Of or relating to the cultivation of vast areas of land with a minimum of labor or expense.
Having wide extent; of much superficial extent; expanded; large; broad; wide; comprehensive
Great in range or scope
Large in number or quantity (especially of discourse)
Having broad range or effect
Of agriculture; increasing productivity by using large areas with minimal outlay and labor
Large in extent, range, or amount.
Capable of being extended.
In the nature of an extent, wide, widespread.
Large in spatial extent or range
Large in spatial extent or range or scope or quantity
Broad in scope or content

Large in number or quantity (especially of discourse)
Affording an abundant supply
Yielding or containing plenty; affording ample supply: : plentiful.
Large in quantity; abundant.
Abounding in matter, thoughts, or words; wordy.
Large in quantity or amount; plentiful; abundant; fruitful.
Great in quantity or number, profuse, abundant; taking place on a large scale.
Having an abundant supply.
Full of thought, information, or matter; exuberant in words, expression, or style.

Logical extension.
Pertaining to logical extension.
Pertaining to or characterized by extension in space or in any quantity; having extent or extension.
Of agriculture
Having considerable extent; wide; large; embracing a wide area or a great number of objects; diffusive: as, an extensive farm; an extensive sphere of operations; extensive benevolence.
That may be extended or spread out; extensible.
In agriculture, noting that method of farming or husbandry in which relatively small crops or returns of any kind are taken from large areas with a minimum of labor and expense.

Synonyms Ample, Copious, Plenteous (see ample), rich, full, exuberant, overflowing, profuse.
Having an abundant supply; abounding; plenteous; liberal.
Exhibiting abundance or fullness, as of thoughts or words.
Abundant; plentiful; ample; large in quantity or number: as, copious supplies; a copious feast; copious notes of a lecture; copious rain.

Substantial, Intensive, Lengthy, Thorough, Exhaustive, Far reaching, Big, Sweeping, Abundant, Wide, Extended, Large, Copious, Considerable, Comprehensive

Big, Many, Hearty, Heavy, Numerous, Enormous, Abundance, Bountiful, Voluminous, Rich, Extensive, Plenteous, Plentiful, Abundant, Ample

Substantial, Intensive, Lengthy, Thorough, Exhaustive, Far reaching, Big, Sweeping, Abundant, Wide, Extended, Large, Copious, Considerable, Comprehensive

Big, Many, Hearty, Heavy, Numerous, Enormous, Abundance, Bountiful, Voluminous, Rich, Extensive, Plenteous, Plentiful, Abundant, Ample

Since mass is extensive, it must be additive.
United States Navy, and had extensive diplomatic experience.
This collection of free printable labels is extensive.
His background is truly extensive in that regard.
Sanitizing public areas frequently using extensive cleaning measures.
The representative had extensive knowledge on LTC insurance.
Results suggest that such variability can be extensive.
God, but as extensive evidence to the contrary.
DER does not need extensive knowledge about the DOT drug and alcohol testing program and need not spend extensive time on DER duties.
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