different between numerous vs copious

English

numerous (comparative more numerous, superlative most numerous)

Indefinitely large numerically, many.
There are numerous definitions of the word 'man'.

From Middle English copious, from Latin copiosus, copia (“abundance”), from co- + ops (“wealth”) + -osus (“full of”).

copious (comparative more copious, superlative most copious)

Vast in quantity or number, profuse, abundant; taking place on a large scale.
- 1748. David Hume. Enquiry concerning Human Understanding. Section 3. § 18.
  These loose hints I have thrown together, in order to excite the curiosity of philosophers, and beget a suspicion at least, if not a full persuasion, that this subject is very copious,
Having an abundant supply.
Full of thought, information, or matter; exuberant in words, expression, or style.

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