Supplication refers to humble, earnest entreaty. And we can express petitions, or requests for something specific.
وَٱلَّذِينَ لَا يَبْذُلُونَ ٱلْجُهْدَ لِفِعْلِ ذلِكَ يُظْهِرُونَ أَنَّهُمْ لَا يُقَدِّرُونَ هذَا ٱلْعَرْضَ .‏