किससे kissē

कौन kaun (hindi)

interrogative pronoun. Who

से sē (hindi)

से is used for denoting :

• The Subject of a Verb in the passive and impersonal voices.
• The indirect Objects (which are usually persons) of the Verbs meaning 'to tell, say, ask, ask for, beg, demand, claim, request’.
• Means, instrument or agency.
• Manner.
• Cause, reason, origin.
• Association, antagonism.
• Separation or keeping away from.
• Starting point (place or time).
• Duration (with reference to a continuous 'action' of present or past).
• Difference and comparison between two persons or things.
  (A Basic Grammar of Modern Hindi)