Make the longest possible list of the more rare and advanced Islamic terms, of which most people are not aware of their existence. However, don't add a description.
1. Istighfar
2. Nuqat-e-Tib
3. an-Nafahat al-Ilahiyyah
4. Dhikr
5. ath-Thawab
6. Aqama-l-Salah
7. al-Mahabbah
8. al-Mujahadah
9. as-Suluk
10. Ilahiyanat
11. al-Barzakh
12. Quranshahi
13. al-Wahy
14. al-Insan al-Kamil
15. ad-Dawr al-Ashli
16. Dhawq al-Haqq
17. Wasila
18. al-Ghaib
19. as-Sawm al-Kabir
20. al-Jabarut
21. Takwin
22. al-Qutb al-Azam
23. al-Haqq al-Mubin
24. Ta’wil
25. al-Hikmah al-Kubra
26. al-Jabr
27. ar-Ruh al-Qudsi
28. al-Khafi
29. al-Muhasabah
30. al-Waqar
31. al-Adyat al-Latafah
32. al-Fana
33. al-Farad
34. al-Khalwah
35. al-Tawba
36. al-Tawakkul
37. al-Tawassul
38. al-Tirdad
39. al-Samadiyyah
40. al-Wujood
Update (2023-11-07):
1. Mihraj
2. Maqam
3. Ahl al-Kisa
4. Burhaniyya
5. Dhikr al-Khafi
6. Nasutiyyah
7. Khatt al-Iman
8. Mehdawi
9. Barakah
10. Al-Fayd
11. Rasa'il
12. Waseelah
13. Radiya
14. Suluk
15. Uruj
16. Rijal al-Ghaib
17. Nahr al-Uqul
18. Haal
19. Safinah
20. Ziyarat al-Qubur
21. Ushshaq
22. Awrad
23. Ta'awwudh
24. Chilla
25. Tawakkul
26. Dhikr al-Jalal
27. Ma'na
28. Fayd al-Qadir
29. Malakutiyyah
30. Ahl al-Sunnah wa al-Jama'ah