carcinoma in situ vs preinvasive cancer

carcinoma in situ and preinvasive cancer both are nouns.

Word	Noun	Adjective	Verb	Adverb
carcinoma in situ	Yes	No	No	No
preinvasive cancer	Yes	No	No	No

As nouns, carcinoma in situ and preinvasive cancer are synonyms defined as:

carcinoma in situ and preinvasive cancer: a cluster of malignant cells that has not yet invaded the deeper epithelial tissue or spread to other parts of the body

carcinoma in situ (noun)	preinvasive cancer (noun)
a cluster of malignant cells that has not yet invaded the deeper epithelial tissue or spread to other parts of the body	a cluster of malignant cells that has not yet invaded the deeper epithelial tissue or spread to other parts of the body