metastatic tumor vs tumor

metastatic tumor and tumor both are nouns.

Word	Noun	Adjective	Verb	Adverb
metastatic tumor	Yes	No	No	No
tumor	Yes	No	No	No

As nouns, tumor is a hypernym of metastatic tumor; that is, tumor is a word with a broader meaning than metastatic tumor:

metastatic tumor: a tumor that is malignant and tends to spread to other parts of the body
tumor: an abnormal new mass of tissue that serves no purpose

Other hypernyms of metastatic tumor include neoplasm, tumour, malignance, malignancy.

metastatic tumor (noun)	tumor (noun)
a tumor that is malignant and tends to spread to other parts of the body	an abnormal new mass of tissue that serves no purpose