The words that open a relative clause or a question.

• الَّذِي
  the one who, which (one man)

  alladhī

  relative pronoun · 304×
• الَّتِي
  the one who, which (one woman)

  allatī

  relative pronoun · 68×
• الَّذِينَ
  those who (plural)

  alladhīna

  relative pronoun · 1059×
• مَنْ
  who, whoever

  man

  relative pronoun · 871×
• مَاذَا
  what? (in a question)

  mādhā

  question word · 26×
• أَيْنَ
  where?

  ayna

  question word · 12×
• مَتَىٰ
  when?

  matā

  question word · 9×
• كَمْ
  how many?

  kam

  question word · 20×
• هَلْ
  is it that…? (yes-or-no question)

  hal

  question word · 93×
• كَيْفَ
  how?

  kayfa

  question word · 80×
• أَ
  …? (turns a sentence into a question)

  a-

  question word · 507×