This is the 490th most frequent Hindi word.
इज
The Hindi word "इज" (ij) does not exist as a standalone term with meaning; it may be a misinterpretation or misspelling.
In this sentence, 'इज' is used to inquire a fact, embedding it to form a question in accordance to English-Hindi usage.
क्या इज आपकी किताब है?
Is this your book?
Here, 'इज' explicitly links the subject and complement, signifying the usage of 'is' in Hindi as in a copulative structure.
वह लड़की इज मेरी बहन है।
That girl is my sister.
Here, 'इज' is used as a representation of the auxiliary verb 'is' in Hindi syntax, showing the present continuous tense.