The mobile app is missing the indefinite article in the answers
The other way round ....
Ea este savantă, el este cercetător.
Duolingo won't accept "scholar" as a translation for "savant"
also "savant" is an english word as well and should be accepted
But 'savant' in English doesn't mean "scientist". Nor "scholar".
why did it accept 'he is scientist, she is researcher"?? That is not correct!