urinalysis vs diagnosis

urinalysis and diagnosis both are nouns.

Word	Noun	Adjective	Verb	Adverb
urinalysis	Yes	No	No	No
diagnosis	Yes	No	No	No

As nouns, diagnosis is a hypernym of urinalysis; that is, diagnosis is a word with a broader meaning than urinalysis:

urinalysis: (medicine) the chemical analysis of urine (for medical diagnosis)
diagnosis: identifying the nature or cause of some phenomenon

Other hypernyms of urinalysis include diagnosing, chemical analysis, qualitative analysis.

urinalysis (noun)	diagnosis (noun)
(medicine) the chemical analysis of urine (for medical diagnosis)	identifying the nature or cause of some phenomenon