which
Pronunciation:
/wɪt͡ʃ//wɪt͡ʃ/pronoun
Definitions
(interrogative) What one or ones (of those mentioned or implied).
Example: By now, you must surely know which is which.
The/Any ones that; whichever.
Example: Please take which you please.
(relative) Introduces a relative clause giving further information about something previously mentioned.
Example: He had to leave, which was very difficult.
(relative) Used of people (now generally who, whom or that).