س ج دs-j-d
(ن) سَجَدَ يَسْجُدُ سُجُوْدًاsajada yasjudu sujūdan: to bow down and place the forehead on the ground; the original sense is of bowing in utter humility, which is why the word is also used of inanimate things being submissive. ﴿اسْجُدُوْا لِاٰدَمَ﴾ (Al-Baqarah 2:34); ﴿وَاسْجُدْ وَاقْتَرِبْ﴾ (Al-ʿAlaq 96:19); ﴿وَالنَّجْمُ وَالشَّجَرُ يَسْجُدٰنِ﴾ (Ar-Raḥmān 55:6)
سَاجِدٌsājid pl. سَاجِدُوْنَ وَسُجَّدٌsājidūna wa-sujjad (active participle, ism fāʿil): one who prostrates. ﴿وَّادْخُلُوا الْبَابَ سُجَّدًا﴾ (Al-Baqarah 2:58)
مَسْجِدٌmasjid pl. مَسَاجِدُmasājidu (noun of time or place, ẓarf): a place of prostration. ﴿وَّاَنَّ الْمَسٰجِدَ لِلّٰهِ﴾ (Al-Jinn 72:18)This root occurs 92 times in the Quran.