This is NOT an interview question. But I tend to hear about it often a lot. Ever since the first time I heard it,I'm puzzled what does it really mean. As I'm learning OS now,I was introduced the concept of Virtual Address Space(V.A.S). I'm wondering if that very 32 bit or 64 bit means that the VAS is 32 bit or 64 bit. Is there this correlation being 64 bit process means VAS for that very process would 64 bit VAS.

Anyone please help me to clarify my understanding about the VAS and 32/64 bit process. Any answers will be appreciated,and thanks in advance.
Looking forward to get your responses.