Sometimes Solomon uses the word “vanity ” as a parallel of“ striving after wind. ” Obviously, any attempt to catch the wind is futile.
وَٱلْكَلِمَةُ ٱلْعِبْرَانِيَّةُ ٱلْمُتَرْجَمَةُ « بَاطِلٌ » تُشِيرُ إِلَى أَمْرٍ فَارِغٍ ،‏ تَافِهٍ ،‏ لَا جَدْوَى مِنْهُ ،‏ لَا جَوْهَرَ لَهُ وَلَا قِيمَةَ دَائِمَةً .‏