The Quran root ف ل ك f-l-k

إِنَّ فِي خَلْقِ السَّمَاوَاتِ وَالْأَرْضِ وَاخْتِلَافِ اللَّيْلِ وَالنَّهَارِ وَالْفُلْكِ الَّتِي تَجْرِي فِي الْبَحْرِ بِمَا يَنفَعُ النَّاسَ وَمَا أَنزَلَ اللَّهُ مِنَ السَّمَاءِ مِن مَّاءٍ فَأَحْيَا بِهِ الْأَرْضَ بَعْدَ مَوْتِهَا وَبَثَّ فِيهَا مِن كُلِّ دَابَّةٍ وَتَصْرِيفِ الرِّيَاحِ وَالسَّحَابِ الْمُسَخَّرِ بَيْنَ السَّمَاءِ وَالْأَرْضِ لَآيَاتٍ لِّقَوْمٍ يَعْقِلُونَ ١٦٤

وَالْفُلْكِ wal-ful'ki · and the ships

Indeed, in the creation of the heavens and the earth, and the alternation of the night and the day, and the [great] ships which sail through the sea with that which benefits people, and what Allāh has sent down from the heavens of rain, giving life thereby to the earth after its lifelessness and dispersing therein every [kind of] moving creature, and [His] directing of the winds and the clouds controlled between the heaven and earth are signs for a people who use reason. (Surah Al-Baqarah, 2:164)

فَكَذَّبُوهُ فَأَنجَيْنَاهُ وَالَّذِينَ مَعَهُ فِي الْفُلْكِ وَأَغْرَقْنَا الَّذِينَ كَذَّبُوا بِآيَاتِنَا إِنَّهُمْ كَانُوا قَوْمًا عَمِينَ ٦٤

الْفُلْكِ l-ful'ki · the ship

But they denied him, so We saved him and those who were with him in the ship. And We drowned those who denied Our signs. Indeed, they were a blind people. (Surah Al-A'raf, 7:64)

وَهُوَ الَّذِي خَلَقَ اللَّيْلَ وَالنَّهَارَ وَالشَّمْسَ وَالْقَمَرَ كُلٌّ فِي فَلَكٍ يَسْبَحُونَ ٣٣

فَلَكٍ falakin · an orbit

And it is He who created the night and the day and the sun and the moon; all [heavenly bodies] in an orbit are swimming. (Surah Al-Anbya, 21:33)