godan verb (-ru, irregular)
also be; be ... as well
Formal or written である with も added: it presents another identity, quality, or fact as also true, in addition to something already stated or implied.
See also: である
彼は医者であり、研究者でもある。
He is a doctor and also a researcher.
この問題は政治的であると同時に、倫理的
This issue is political and, at the same time, ethical as well.
godan verb (-ru, irregular)
be some ... or other; there be ... or something
Used after a noun, especially in questions, to suggest a possible thing, reason, problem, errand, complaint, etc. indirectly: 'some ... or something.' This is a softer or probing use of でも plus ある.
何か理由でもあるのですか。
Is there some reason or something?
彼に不満でもあるの？
Do you have some complaint about him or something?