cervical smear vs Pap smear

cervical smear and Pap smear both are nouns.

Word	Noun	Adjective	Verb	Adverb
cervical smear	Yes	No	No	No
Pap smear	Yes	No	No	No

As nouns, cervical smear and Pap smear are synonyms defined as:

cervical smear and Pap smear: a sample of secretions and superficial cells of the uterine cervix and uterus; examined with a microscope to detect any abnormal cells

Other synonyms of cervical smear include Papanicolaou smear.

cervical smear (noun)	Pap smear (noun)
a sample of secretions and superficial cells of the uterine cervix and uterus; examined with a microscope to detect any abnormal cells	a sample of secretions and superficial cells of the uterine cervix and uterus; examined with a microscope to detect any abnormal cells