please compare tumours and cyst.?

Answer 1

Tumors and cysts are abnormal growths that have the potential to interfere with normal function of the body.

A cyst is an air- or fluid-filled sac. It can form in any part of the body, including in bones, organs and soft tissues. The vast majority of cysts are noncancerous (benign). But it is important to note that nearly all cancers can produce cysts.

The term "tumor" refers to a swelling in the body. To many, the term is synonymous with cancer. But any type of swelling — even a large bruise (hematoma) — is technically a tumor. Tumors can be cancerous or noncancerous.

The only way to be absolutely sure if a cyst or tumor is cancerous is to remove some of the affected tissue (biopsy) for examination under a microscope.-

Answer 2

Tumor means "growth". It includes benign or malignant. Cyst looks like a fluid filled "bag'. some tumors are cystic. Simple cyst are most likely benign.
I wish you had specified where the cyst is located.