What is the difference between "أُجيب" (ujīb) and "استجاب" (istajāb) in the Holy Qur’an, and does the meaning of "الإجابة" (al-ijābah) differ from "الاستجابة" (al-istijābah) when a servant supplicates to his Lord?

The terms al-ijabah (answering) and al-istijabah (responding/responding favorably) are interpreted as the acceptance of supplication and the granting of what is requested. The verb istajaba (to respond favorably) implies a request, or it can be synonymous with ajaba (to answer). However, ajaba is more general than istajaba, because istajaba is only used in contexts where what was supplicated for is accepted, whereas ajaba encompasses both acceptance and rejection. Every use of the verb istajaba and its derivatives in the Holy Quran signifies the granting of what is requested and the acceptance of supplication.