Islamic concepts

Khashiya خَشِىَ — to stand in awe

focus, quality, attention

Khushūʿ خشوع — awe (in ritual prayer)

http://corpus.quran.com/qurandictionary.jsp?q=x$y

خشوع

ṣalāh

khashyah quality and focus (in ritual prayer)

Ibn al-Qayyim defined Khushu as a state “. . . when the heart feels aware and humble before the greatness and glory of Allah, and is filled with awe, fear and shyness . . .” (Al-Rooh, p. 314).