What are the differences between the etymology of “ingenious” and “ingenuous”? [closed]

Question

As a matter of fact, I don't know whether there is any difference between the source words in bold below:

From Latin ingeniosus (“endowed with good natural capacity, gifted with genius”), from ingenium (“innate or natural quality, natural capacity, genius”), from in (“in”) + gignere (“to produce”), Old Latin genere. Compare French ingénieux; see also engine.

From Latin ingenuus ("of noble character, frank")

And I wanna know the help of discerning the Modern meanings of those two words with the grammatical suffixes in Old Latin or Greek above.

Answer 1

The account by Daily Writing Tips that Roaring Fish presents is correct for the recent history. But it stops about 2000 years ago, when it actually goes back at least 4000.

The root in each of these words comes from the Proto-Indo-European root *genə- (or *gen-), meaning 'birth' and all the concepts attendant on it -- including noble birth, which gives rise to both the English words kind and gentle, which were once used to talk about the way those of noble birth behaved.

Some of the other descendants (Cognates, literally 'born together') of PIE *genə- are shown in this chart, which distinguishes literal descent from borrowings; after a few generations nobody notices whether a word is "native" or not, anyway.

Answer 2

Google has the answer.

Ingenious vs. Ingenuous