Ma'shuq
Ma'shuq originates from Arabic/Persian معشوق and is a passive participle meaning 'beloved.' It is common in Persian and Urdu poetry.
No. Ma'shuq is a lexical word used in literature and poetry, not a Quranic proper noun.
Yes. It is derived from Arabic roots and used historically in Muslim literary culture; families often choose it for its poetic meaning.
Ma'shuq is found in Persianate, Urdu, Pashto, and some East African Muslim poetic registers, though as a given name it is uncommon.
The form معشوقة (ma'shuqa) would be the feminine grammatical form in Arabic/Persian, though usage varies regionally.