urinalysis vs diagnosing

urinalysis and diagnosing both are nouns.

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

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

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

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

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