medical checkup vs medical examination

medical checkup and medical examination both are nouns.

Word	Noun	Adjective	Verb	Adverb
medical checkup	Yes	No	No	No
medical examination	Yes	No	No	No

As nouns, medical checkup and medical examination are synonyms defined as:

medical checkup and medical examination: a thorough physical examination; includes a variety of tests depending on the age and sex and health of the person

Other synonyms of medical checkup include checkup, health check, medical, medical exam.

medical checkup (noun)	medical examination (noun)
a thorough physical examination; includes a variety of tests depending on the age and sex and health of the person	a thorough physical examination; includes a variety of tests depending on the age and sex and health of the person